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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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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 1864, the first barbiturate (barbituric acid) was synthesized.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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Excessive alcohol use costs the country approximately $235 billion every year.