Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Synaptic response of photoreceptors to dark and light.
Steps in the humoral and cell-mediated immune response
Selected Biologic Response Modifiers and Miscellaneous Antineoplastics