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Health benefits of tea
The possible beneficial health effects of tea consumption have been suggested and supported by some studies, but others have not found beneficial effects. Studies claim that the polyphenol content of ... > more -
Artificial heart
An artificial heart is a prosthetic device that is implanted into the body to replace the original biological heart. It is distinct from a cardiac pump, which is an external device used to provide ... > more -
Vector (biology)
Traditionally in medicine, a vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another. Species of mosquito, for example, ... > more -
Senescence
In biology, senescence is the combination of processes of deterioration which follow the period of development of an organism. For the science of the care of the elderly, see gerontology; for ... > more -
Common cold
Acute nasopharyngitis, often known as the common cold, is a mild viral infectious disease of the the upper respiratory system (nose and throat). Symptoms include sneezing, sniffling, nasal ... > more -
Tropospheric ozone
Ozone (O3) is a key constituent of the troposphere. Photochemical and chemical reactions involving it drive many of the chemical processes that occur in the atmosphere by day and by night. At ... > more -
Colorectal cancer
Colorectal cancer, also called colon cancer or bowel cancer, includes cancerous growths in the colon, rectum and appendix. It is the third most common form of cancer and the second leading cause of ... > more
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