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Author Question: In a negative reaction, agglutination will be visible in: a. 30 seconds. b. one minute. c. a ... (Read 43 times) |
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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Vaccines prevent between 2.5 and 4 million deaths every year.