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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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The longest a person has survived after a heart transplant is 24 years.