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Did you know?
There are 60,000 miles of blood vessels in every adult human.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.