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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
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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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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.