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Did you know?
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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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There are more sensory neurons in the tongue than in any other part of the body.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.