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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.