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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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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 longest a person has survived after a heart transplant is 24 years.
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The average adult has about 21 square feet of skin.
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Excessive alcohol use costs the country approximately $235 billion every year.