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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.