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			<title>ScienceDaily: Cell Biology News</title>
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			<description>Cell biology news. Read full text news, articles and images on cell biology, updated daily.</description>
			<language>en-us</language>
			<pubDate>Thu, 16 Feb 2012 04:05:01 EST</pubDate>
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				<title>ScienceDaily: Cell Biology News</title>
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				<description>For more science articles, visit ScienceDaily.</description>
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				<title>Computer sleuthing helps unravel RNA&#39;s role in cellular function</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120215143105.htm</link>
				<description>Computer engineers may have just provided the medical community a new way of figuring out exactly how one of the three building blocks of life forms and functions. They have used a complex computer program to analyze RNA motifs &#8211; the subunits that make up RNA.</description>
				<pubDate>Wed, 15 Feb 2012 14:31:31 EST</pubDate>
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				<title>Prions play powerful role in the survival and evolution of wild yeast strains</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120215142817.htm</link>
				<description>Scientists have tested nearly 700 wild yeast strains isolated from diverse environments for the presence of known and unknown prion elements, finding them in one third of all strains. All the prions appear capable of creating diverse new traits, nearly half of which are beneficial. These unexpected findings stand as strong evidence against the common argument that prions are merely yeast &quot;diseases&quot; or rare artifacts of laboratory culture.</description>
				<pubDate>Wed, 15 Feb 2012 14:28:28 EST</pubDate>
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				<title>Stretching helices help keep muscles together</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120215123949.htm</link>
				<description>Scientists have discovered that the elastic part of myomesin, a protein that links muscle filaments, can stretch to two and a half times its original length, unfolding in a way that was hitherto unknown.</description>
				<pubDate>Wed, 15 Feb 2012 12:39:39 EST</pubDate>
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				<title>New defense mechanism against viruses and cancer identified</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120215123702.htm</link>
				<description>Scientists have found a fundamentally new mechanism how our defense system is ramped up when facing a viral intruder. Exploitation of this mechanism in vaccines sparks new hope for better prevention and therapy of infectious diseases and cancer.</description>
				<pubDate>Wed, 15 Feb 2012 12:37:37 EST</pubDate>
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				<title>Noncoding RNAs alter yeast phenotypes in a site-specific manner</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120214145333.htm</link>
				<description>Scientists have shown for the first time how two long intergenic noncoding RNAs in brewer&#39;s yeast contribute to a location-dependent switch for the yeast FLO11 gene to toggle between active and inactive states.</description>
				<pubDate>Tue, 14 Feb 2012 14:53:53 EST</pubDate>
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				<title>SIV infection may lead to increase in immune-suppressive Treg cells</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120214134944.htm</link>
				<description>Tissue in monkeys infected with a close relative of HIV can ramp up production of a type of T cell that actually weakens the body&#39;s attack against the invading virus.</description>
				<pubDate>Tue, 14 Feb 2012 13:49:49 EST</pubDate>
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				<title>Tangled up in DNA: New molecule has potential to help treat genetic diseases and HIV</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120214134942.htm</link>
				<description>Chemists have created a molecule that&#39;s so good at tangling itself inside the double helix of a DNA sequence that it can stay there for up to 16 days before the DNA liberates itself, much longer than any other molecule reported.</description>
				<pubDate>Tue, 14 Feb 2012 13:49:49 EST</pubDate>
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				<title>Critical stage of embryonic development now observable</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120214121844.htm</link>
				<description>A novel approach in the study of the development of mammalian embryos has just been developed. The research enables scientists to view critical aspects of embryonic development which was previously unobservable.</description>
				<pubDate>Tue, 14 Feb 2012 12:18:18 EST</pubDate>
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				<title>Malaria parasite goes bananas before sex</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120214100940.htm</link>
				<description>New research shows how the malaria parasite changes into a banana shape before sexual reproduction, a finding that could provide targets for vaccine or drug development and may explain how the parasite evades the human immune system.</description>
				<pubDate>Tue, 14 Feb 2012 10:09:09 EST</pubDate>
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				<title>Turmeric-based drug effective on Alzheimer flies</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120214100554.htm</link>
				<description>Curcumin, a substance extracted from turmeric, prolongs life and enhances activity of fruit flies with a nervous disorder similar to Alzheimer&#39;s disease, according to new research. The study indicates that it is the initial stages of fibril formation and fragments of the amyloid fibrils that are most toxic to neurons.</description>
				<pubDate>Tue, 14 Feb 2012 10:05:05 EST</pubDate>
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				<title>Plants use circadian rhythms to prepare for battle with insects</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120213185654.htm</link>
				<description>In a study of the molecular underpinnings of plants&#39; pest resistance, biologists have shown that plants use circadian rhythms to both anticipate raids by hungry insects and to time the production of defensive hormones that protect against insect attack. The researchers demonstrated that when the plants&#39; timing was shifted, the plants were defenseless against daytime-feeding caterpillars.</description>
				<pubDate>Mon, 13 Feb 2012 18:56:56 EST</pubDate>
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				<title>Link between sodium, calcium and heartbeat illuminated</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120213185645.htm</link>
				<description>Researchers have revealed, for the first time, one of the molecular mechanisms that regulates the beating of heart cells by controlling the movement of sodium in out of the cells -- and what calcium has to do with it.</description>
				<pubDate>Mon, 13 Feb 2012 18:56:56 EST</pubDate>
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				<title>Sensing self and non-self: New research into immune tolerance</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120213185643.htm</link>
				<description>Cancer cells can undergo unchecked proliferation, producing self-antigens that are tolerated by the immune system, rather than being targeted for destruction. At the opposite extreme, autoimmune disorders can result when healthy cells in the body are misidentified as hazards. Researchers now examine how CD8 T cells -- critical weapons in the body&#39;s defensive arsenal -- are regulated when they transition from this tolerant state to an activated state and back.</description>
				<pubDate>Mon, 13 Feb 2012 18:56:56 EST</pubDate>
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				<title>Radiation treatment generates cancer stem cells from less aggressive breast cancer cells, study suggests</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120213185115.htm</link>
				<description>Breast cancer stem cells are thought to be the sole source of tumor recurrence and are known to be resistant to radiation therapy and don&#8217;t respond well to chemotherapy. Researchers report for the first time that radiation treatment -- despite killing half of all tumor cells during every treatment -- transforms other cancer cells into treatment-resistant breast cancer stem cells. Researchers stressed that breast cancer patients should not be alarmed by the study findings and should continue to undergo radiation if recommended by their oncologists.</description>
				<pubDate>Mon, 13 Feb 2012 18:51:51 EST</pubDate>
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				<title>Scientist works to detach protein that HIV uses as protective shield</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120213133704.htm</link>
				<description>One of the frustrations for scientists working on HIV/AIDS treatments has been the human immunodeficiency virus&#39; ability to evade the body&#39;s immune system. Now a researcher has discovered a compound that could help put the immune system back in the hunt.</description>
				<pubDate>Mon, 13 Feb 2012 13:37:37 EST</pubDate>
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				<title>More than just packaging, the genome affects the way our genes change and develop, researcher says</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120213133453.htm</link>
				<description>Since Charles Darwin first put forth the theory of evolution, scientists have been trying to unlock the mysteries of genetics. But research on the genome -- the organism&#39;s entire hereditary package encoded in DNA and RNA -- has been less extensive. There is a tendency to think of the genome as a static and passive container of information. A critical new paradigm now redefines the genome as a dynamic structure that can impact genes themselves.</description>
				<pubDate>Mon, 13 Feb 2012 13:34:34 EST</pubDate>
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				<title>Starve a virus, feed a cure?</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120212192737.htm</link>
				<description>A protein that protects some of our immune cells from the most common and virulent form of HIV works by starving the virus of the molecular building blocks that it needs to replicate. While researchers hope the work will one day lead to a way to make anti-HIV drugs more effective by increasing their potency against the virus, they&#39;re also excited about its implications for our knowledge of other pathogens, such as herpes viruses.</description>
				<pubDate>Sun, 12 Feb 2012 19:27:27 EST</pubDate>
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				<title>Molecular secrets of ancient Chinese herbal remedy discovered</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120212192733.htm</link>
				<description>For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan, from a type of hydrangea that grows in Tibet and Nepal. More recent studies suggest that halofuginone, a compound derived from this extract&#39;s bioactive ingredient, could be used to treat many autoimmune disorders as well. Now, researchers have discovered the molecular secrets behind this herbal extract&#39;s power.</description>
				<pubDate>Sun, 12 Feb 2012 19:27:27 EST</pubDate>
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				<title>How a protein protects cells from HIV infection</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120212192555.htm</link>
				<description>A novel discovery reveals a mechanism by which the immune system tries to halt the spread of HIV. Harnessing this mechanism may open up new paths for therapeutic research aimed at slowing the virus&#8217; progression to AIDS.</description>
				<pubDate>Sun, 12 Feb 2012 19:25:25 EST</pubDate>
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				<title>A mitosis mystery solved: How chromosomes align perfectly in a dividing cell</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120212192552.htm</link>
				<description>Although the process of mitotic cell division has been studied intensely for more than 50 years, researchers have only now solved the mystery of how cells correctly align their chromosomes during symmetric mitosis.</description>
				<pubDate>Sun, 12 Feb 2012 19:25:25 EST</pubDate>
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				<title>New method for creating tissue engineering scaffolds</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210133356.htm</link>
				<description>Researchers have developed a new method for creating scaffolds for tissue engineering applications, providing an alternative that is more flexible and less time-intensive than current technology.</description>
				<pubDate>Fri, 10 Feb 2012 13:33:33 EST</pubDate>
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				<title>Protein libraries in a snap</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210133354.htm</link>
				<description>One undergraduate student will depart university with not only a degree but also a possible patent for his invention of an efficient way to create protein libraries, an important component of biomolecular research.</description>
				<pubDate>Fri, 10 Feb 2012 13:33:33 EST</pubDate>
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				<title>Grass to gas: Genome map speeds biofuel development</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210133348.htm</link>
				<description>Researchers have taken a major step in the ongoing effort to find sources of cleaner, renewable energy by mapping the genomes of two originator cells of Miscanthus x giganteus, a large perennial grass with promise as a source of ethanol and bioenergy.</description>
				<pubDate>Fri, 10 Feb 2012 13:33:33 EST</pubDate>
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				<title>Seven sweet facts about how chocolate is made</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210133217.htm</link>
				<description>Most people are unaware of how chocolate gets from trees to your table find out with these seven fun facts.</description>
				<pubDate>Fri, 10 Feb 2012 13:32:32 EST</pubDate>
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				<title>Four natural extracts with anti-obesity effects tested on rats</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210110036.htm</link>
				<description>Researchers have identified four plant extracts that might help in preventing and fighting obesity. The researchers identified the most effective plant extracts through in vitro assays; subsequently, extracts were tested on rats. While the results obtained are promising, further studies on animals are required to evaluate and confirm the anti-obesity effects of these extracts. Once their anti-obesity effects are confirmed on animals, the extracts will be tested on humans.</description>
				<pubDate>Fri, 10 Feb 2012 11:00:00 EST</pubDate>
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				<title>Curry spice component may help slow prostate tumor growth</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210105859.htm</link>
				<description>Curcumin, an active component of the Indian curry spice turmeric, may help slow down tumor growth in castration-resistant prostate cancer patients on androgen deprivation therapy, a new study suggests.</description>
				<pubDate>Fri, 10 Feb 2012 10:58:58 EST</pubDate>
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				<title>What lies beneath: Mapping hidden nanostructures within materials, and perhaps cells</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120210104748.htm</link>
				<description>A new method to map nanostructures within materials may lead to biological imaging of the internal organization of cells.</description>
				<pubDate>Fri, 10 Feb 2012 10:47:47 EST</pubDate>
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				<title>New avenue for treating colon cancer</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209172918.htm</link>
				<description>Cell biologists have uncovered a new insight into colon cancer, the third leading cause of cancer-related deaths in the United States. The team analyzed human colon cancer specimens and found that in nearly 80 percent of them the variants of a gene (HNF4A) are out of balance. This imbalance appears to be the result of a complex, multi-step process by an enzyme (Src kinase).</description>
				<pubDate>Thu, 09 Feb 2012 17:29:29 EST</pubDate>
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				<title>Ultraviolet protection molecule in plants yields its secrets</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209172820.htm</link>
				<description>Lying around in the sun all day is hazardous not just for humans but also for plants. Ultraviolet radiation from the sun can damage proteins and DNA inside cells, leading to poor growth and even death. But plants have evolved some powerful adaptive defenses, including a complex array of protective responses orchestrated by a UV-sensing protein molecule known as UVR8. Now, scientists have put together a detailed picture of UVR8&#39;s structure and inner workings.</description>
				<pubDate>Thu, 09 Feb 2012 17:28:28 EST</pubDate>
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				<title>Decoding the molecular machine behind E. coli and cholera</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209172816.htm</link>
				<description>Scientists have discovered the workings behind some of the bacteria that kill hundreds of thousands every year, possibly paving the way for new antibiotics that could treat infections more effectively.</description>
				<pubDate>Thu, 09 Feb 2012 17:28:28 EST</pubDate>
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				<title>Potential for incorrect relationship identification in new forensic familial searching techniques</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209172805.htm</link>
				<description>New research suggests that unrelated individuals may be mistakenly identified as genetic family members due to inaccurate genetic assumptions. This is particularly relevant when considering familial searching: a new technique which extends forensic identification to family members of individuals with profiles in offender/arrestee DNA databases. In a new study, researchers show that false familial identification may be more likely for individuals with particular genetic backgrounds; for example, in the USA, those of Asian or Native American descent.</description>
				<pubDate>Thu, 09 Feb 2012 17:28:28 EST</pubDate>
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				<title>Most lethal known species of prion protein identified</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209152814.htm</link>
				<description>Scientists have identified a single prion protein that causes neuronal death similar to that seen in &quot;mad cow&quot; disease, but is at least 10 times more lethal than larger prion species.</description>
				<pubDate>Thu, 09 Feb 2012 15:28:28 EST</pubDate>
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				<title>Ocean microbe communities changing, but long-term environmental impact is unclear</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209144003.htm</link>
				<description>As oceans warm due to climate change, water layers will mix less and affect the microbes and plankton that pump carbon out of the atmosphere &#8211; but researchers say it&#39;s still unclear whether these processes will further increase global warming or decrease it. It could be either, they say.</description>
				<pubDate>Thu, 09 Feb 2012 14:40:40 EST</pubDate>
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				<title>Baby knows best: Baby-led weaning promotes healthy food preferences</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209135842.htm</link>
				<description>A new study has shown that babies who are weaned using solid finger food are more likely to develop healthier food preferences and are less likely to become overweight as children than those who are spoon-fed pureed food.</description>
				<pubDate>Thu, 09 Feb 2012 13:58:58 EST</pubDate>
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				<title>Piranha vs. Arapaima: Engineers find inspiration for new materials in piranha-proof armor</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209101841.htm</link>
				<description>It&#39;s a matchup worthy of a late-night cable movie: put a school of starving piranha and a 300-pound fish together, and who comes out the winner? The surprising answer -- given the notorious guillotine-like bite of the piranha -- is Brazil&#39;s massive Arapaima fish. The secret to Arapaima&#39;s success lie in its intricately detailed scales, which could provide &quot;bioinspiration&quot; for engineers looking to develop flexible ceramics.</description>
				<pubDate>Thu, 09 Feb 2012 10:18:18 EST</pubDate>
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				<title>Cellular switches: From the RNA world to the &#39;modern&#39; protein world</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120209101607.htm</link>
				<description>Scientists have discovered the molecular mechanism of a G protein family. G proteins play a central role in cellular signal processing. They are described as molecular switches that oscillate between &#39;on&#39; and &#39;off&#39;, regulated by effectors. Biochemists have now gained fundamental insights into the mechanics of these switches.</description>
				<pubDate>Thu, 09 Feb 2012 10:16:16 EST</pubDate>
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				<title>DNA sequencing helps identify cancer cells for immune system attack</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208152342.htm</link>
				<description>DNA sequences from tumor cells can be used to direct the immune system to attack cancer, according to scientists. The immune system relies on an intricate network of alarm bells, targets and safety brakes to determine when and what to attack. The new results suggest that scientists may now be able to combine DNA sequencing data with their knowledge of the triggers and targets that set off immune alarms to more precisely develop vaccines and other immunotherapies for cancer.</description>
				<pubDate>Wed, 08 Feb 2012 15:23:23 EST</pubDate>
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				<title>Why bad immunity genes survive</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208133029.htm</link>
				<description>Biologists have found new evidence of why mice, people and other vertebrate animals carry thousands of varieties of genes to make immune-system proteins named MHCs -- even though some of those genes make vertebrate animals susceptible to infections and to autoimmune diseases.</description>
				<pubDate>Wed, 08 Feb 2012 13:30:30 EST</pubDate>
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				<title>New  &#39;cell assay on a chip:&#39; Solid results from simple means</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208132846.htm</link>
				<description>A research engineer combined a glass slide, plastic sheets and double-sided tape to build a &quot;diffusion-based gradient generator&quot;, a tool to rapidly assess how changing concentrations of specific chemicals affect living cells.</description>
				<pubDate>Wed, 08 Feb 2012 13:28:28 EST</pubDate>
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				<title>Timing capability added to living cell sensors</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208132723.htm</link>
				<description>Individual cells modified to act as sensors using fluorescence are already useful tools in biochemistry, but now they can add good timing to their resume.</description>
				<pubDate>Wed, 08 Feb 2012 13:27:27 EST</pubDate>
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				<title>Growing up on a farm directly affects regulation of the immune system, study finds</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208132549.htm</link>
				<description>A new study has shown, for the first time, that growing up on a farm directly affects the regulation of the immune system and causes a reduction in the immunological responses to food proteins.</description>
				<pubDate>Wed, 08 Feb 2012 13:25:25 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120208132549.htm</guid>
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			<item>
				<title>How DNA finds its match</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208132309.htm</link>
				<description>It&#39;s been more than 50 years since James Watson and Francis Crick showed that DNA is a double helix of two strands that complement each other. But how does a short piece of DNA find its match, out of the millions of &#39;letters&#39; in even a small genome? New work shows how it&#39;s done.</description>
				<pubDate>Wed, 08 Feb 2012 13:23:23 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120208132309.htm</guid>
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				<title>The genetics of rice metabolism</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120208090146.htm</link>
				<description>A large-scale study analyzing metabolic compounds in rice grains has identified 131 rice metabolites and clarified the genetic and environmental factors that influence their production.</description>
				<pubDate>Wed, 08 Feb 2012 09:01:01 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120208090146.htm</guid>
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			<item>
				<title>Molecular path from internal clock to cells controlling rest and activity revealed</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120207202813.htm</link>
				<description>The molecular pathway that carries time-of-day signals from the body&#39;s internal clock to ultimately guide daily behavior is like a black box, says a researcher. Now, new research is taking a peek inside, describing a molecular pathway and its inner parts that connect the well-known clock neurons to cells governing rhythms of rest and activity in fruit flies.</description>
				<pubDate>Tue, 07 Feb 2012 20:28:28 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120207202813.htm</guid>
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			<item>
				<title>Scientists develop biological computer to encrypt and decipher images</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120207202803.htm</link>
				<description>Scientists have developed a &quot;biological computer&quot; made entirely from biomolecules that is capable of deciphering images encrypted on DNA chips.</description>
				<pubDate>Tue, 07 Feb 2012 20:28:28 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120207202803.htm</guid>
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			<item>
				<title>Not the black sheep of domestic animals: Unprecedented in-depth view of the genetic history of sheep</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120207202620.htm</link>
				<description>Mapping the ancestry of sheep over the past 11,000 years has revealed that our woolly friends are stars among domestic animals, boasting vast genetic diversity and substantial prospects for continued breeding to further boost wool and food production for a rising world population. An international research team has provided an unprecedented in-depth view of the genetic history of sheep, one of the world&#39;s most important livestock species. The study maps out how humans have moulded sheep to suit diverse environments and to enhance the specialised production of meat, wool and milk.</description>
				<pubDate>Tue, 07 Feb 2012 20:26:26 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120207202620.htm</guid>
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			<item>
				<title>Why bad immunity genes survive: Study implicates arms race between genes and germs</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120207121808.htm</link>
				<description>Biologists have found new evidence for why mice, people and other vertebrate animals carry thousands of varieties of genes to make immune-system proteins named MHCs -- even though some of those genes make us sick.</description>
				<pubDate>Tue, 07 Feb 2012 12:18:18 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120207121808.htm</guid>
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			<item>
				<title>Why common tree is toxic to snowshoe hares</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120206174256.htm</link>
				<description>Biologists have uncovered why the chemical defenses in birch, a common type of tree found in North America, are toxic to snowshoe hares.</description>
				<pubDate>Mon, 06 Feb 2012 17:42:42 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120206174256.htm</guid>
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			<item>
				<title>Exercise triggers stem cells in muscle</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120206143944.htm</link>
				<description>Researchers have determined that an adult stem cell present in muscle is responsive to exercise, a discovery that may provide a link between exercise and muscle health. The findings could lead to new therapeutic techniques using these cells to rehabilitate injured muscle and prevent or restore muscle loss with age.</description>
				<pubDate>Mon, 06 Feb 2012 14:39:39 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120206143944.htm</guid>
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			<item>
				<title>Sharp images from the living mouse brain</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120206122456.htm</link>
				<description>Scientists have for the first time made finest details of nerve cells in the brain of a living mouse visible.</description>
				<pubDate>Mon, 06 Feb 2012 12:24:24 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120206122456.htm</guid>
			</item>
			<item>
				<title>Steroids control gas exchange in plants</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120205163758.htm</link>
				<description>Plants leaves are sealed with a gas-tight wax layer to prevent water loss. Plants breathe through microscopic pores called stomata on the surfaces of leaves. As the key conduits for carbon dioxide uptake and water evaporation, stomata are critical for both our climate and plant productivity. Thus, not surprisingly, the total number and distribution of stomata are strictly regulated by plants to optimize photosynthesis while minimizing water loss. But the mechanisms for such regulation have remained elusive until now.</description>
				<pubDate>Sun, 05 Feb 2012 16:37:37 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120205163758.htm</guid>
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				<title>Why do cells age? Discovery of extremely long-lived proteins may provide insight into cell aging and neurodegenerative diseases</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120203180905.htm</link>
				<description>One of the big mysteries in biology is why cells age. Now scientists report that they have discovered a weakness in a component of brain cells that may explain how the aging process occurs in the brain.</description>
				<pubDate>Fri, 03 Feb 2012 18:09:09 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120203180905.htm</guid>
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				<title>New procedure repairs severed nerves in minutes, restoring limb use in days or weeks</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120203092423.htm</link>
				<description>Scientists believe a new procedure to repair severed nerves could result in patients recovering in days or weeks, rather than months or years. The team used a cellular mechanism similar to that used by many invertebrates to repair damage to nerve axons.</description>
				<pubDate>Fri, 03 Feb 2012 09:24:24 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120203092423.htm</guid>
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			<item>
				<title>Collective action: Occupied genetic switches hold clues to cells&#39; history</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120203092000.htm</link>
				<description>If you wanted to draw your family tree, you could start by searching for people who share your surname. Cells, of course, don&#8217;t have surnames, but scientists have found that genetic switches called enhancers, and the molecules that activate those switches &#8211; transcription factors &#8211; can be used in a similar way, as clues to a cell&#8217;s developmental history. The study also unveils a new model for how enhancers function.</description>
				<pubDate>Fri, 03 Feb 2012 09:20:20 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120203092000.htm</guid>
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				<title>Parasites or not?  Transposable elements in DNA of fruit flies may be beneficial</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120203091813.htm</link>
				<description>Many living organisms suffer from parasites, which use the hosts&#8217; resources for their own purposes. The problem of parasitism occurs at all levels right down to the DNA scale. Genomes may contain up to 80% &#8220;foreign&#8221; DNA but details of the mechanisms by which this enters the host genome and how hosts attempt to combat its spread are still the subject of conjecture. Nearly all organisms contain pieces of DNA that do not really belong to them.</description>
				<pubDate>Fri, 03 Feb 2012 09:18:18 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120203091813.htm</guid>
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				<title>Holding back immunity: &#39;Gatekeeper&#39; protein key to helping immune cells to sound warning</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120203090813.htm</link>
				<description>A &#39;gatekeeper&#39; protein plays a critical role in helping immune cells to sound a warning after encountering signs of tumor growth or infection, researchers report.</description>
				<pubDate>Fri, 03 Feb 2012 09:08:08 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120203090813.htm</guid>
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				<title>Food poisoning: Understanding how bacteria come back from the &#39;dead&#39;</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120202151256.htm</link>
				<description>Salmonella remains a serious cause of food poisoning, in part due to its ability to thrive and quickly adapt to the different environments in which it can grow. New research has taken a detailed look at what Salmonella does when it enters a new environment, which could provide clues to finding new ways of reducing transmission through the food chain and preventing human illness.</description>
				<pubDate>Thu, 02 Feb 2012 15:12:12 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120202151256.htm</guid>
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			<item>
				<title>&#39;Yellow biotechnology&#39;: Using plants to silence insect genes in a high-throughput manner</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120202151248.htm</link>
				<description>&#39;Yellow biotechnology&#39; refers to biotechnology with insects -- analogous to the green (plants) and red (animals) biotechnology. Active ingredients or genes in insects are characterized and used for research or application in agriculture and medicine. Scientists in Germany are now using a procedure which brings forward ecological research on insects: They study gene functions in moth larvae by manipulating genes using the RNA interference technology (RNAi). RNAi is induced by feeding larvae with plants that have been treated with viral vectors. This method -- called &quot;plant virus based dsRNA producing system&quot; (VDPS) -- increases sample throughput compared to the use of genetically transformed plants.&#160;</description>
				<pubDate>Thu, 02 Feb 2012 15:12:12 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120202151248.htm</guid>
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				<title>Probable mechanism underlying resveratrol activity uncovered: Chemical found in red wine and other foods</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120202151133.htm</link>
				<description>Researchers have identified how resveratrol, a naturally occurring chemical found in red wine and other plant products, may confer its health benefits. The authors present evidence that resveratrol does not directly activate sirtuin 1, a protein associated with aging. Rather, the authors found that resveratrol inhibits certain types of proteins known as phosphodiesterases (PDEs), enzymes that help regulate cell energy.</description>
				<pubDate>Thu, 02 Feb 2012 15:11:11 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120202151133.htm</guid>
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			<item>
				<title>Zap of cold plasma reduces harmful bacteria on raw chicken</title>
				<link>http://www.sciencedaily.com/releases/2012/02/120202150734.htm</link>
				<description>A new study demonstrates that plasma can be an effective method for killing pathogens on uncooked poultry.</description>
				<pubDate>Thu, 02 Feb 2012 15:07:07 EST</pubDate>
				<guid isPermaLink="true">http://www.sciencedaily.com/releases/2012/02/120202150734.htm</guid>
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