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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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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.