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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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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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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.