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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The average office desk has 400 times more bacteria on it than a toilet.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.