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Tumor suppressor gene
A tumor suppressor gene is a gene that reduces the probability that a cell in a multicellular organism will turn into a tumor cell. A mutation or deletion of such a gene will increase the probability ... > more -
Epinephrine
Epinephrine (INN), also epinephrin (both pronounced ep-i-NEF-rin), or adrenaline (BAN) is a hormone and a neurotransmitter. Epinephrine is sometimes shortened to epi in medical jargon. Epinephrine ... > more -
Polychlorinated biphenyl
Polychlorinated biphenyls (PCBs) are a class of organic compounds with 1 to 10 chlorine atoms attached to biphenyl. Although the physical and chemical properties vary widely across the class, PCBs ... > more -
Alcoholism
Alcoholism is the consumption of or preoccupation with alcoholic beverages to the extent that this behavior interferes with the alcoholic's normal personal, family, social, or work life. The chronic ... > more -
Radiography
Radiography is the creation of images by exposing a photographic film or other image receptor to X-rays. Since X-rays penetrate solid objects, but are weakened by them depending on the object's ... > more -
Diaphragm (anatomy)
In the anatomy of mammals, the diaphragm is a shelf of muscle extending across the bottom of the ribcage. The diaphragm separates the thoracic cavity (with lung and heart) from the abdominal cavity ... > more
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