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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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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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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.