In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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There are more sensory neurons in the tongue than in any other part of the body.
Selected skeletal muscles and the Achilles tendon (posterior view).
Selected Neurocognitive Disorders Resulting in Dementia
Selected Drugs Suspected of Causing Cancer in Humans