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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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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.