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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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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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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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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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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.