More than 4.4billion prescriptions were dispensed within the United States in 2016.
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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
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There are approximately 3 million unintended pregnancies in the United States each year.
Structure of the enzyme chymotrypsin, a globular protein
Four ways to visualize protein structure
Levels of protein structure.
Three-dimensional structures of proteins: Globular protein