There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
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True Forget-Me-Not
A Schematic Description of the Experiment by Maviel et al. (2004)