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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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The longest a person has survived after a heart transplant is 24 years.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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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.