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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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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.