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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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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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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.