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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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Women are 50% to 75% more likely than men to experience an adverse drug reaction.