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Vaccines prevent between 2.5 and 4 million deaths every year.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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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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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.