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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.