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Did you know?

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.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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Your heart beats over 36 million times a year.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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People about to have surgery must tell their health care providers about all supplements they take.

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Video: Enzyme-Catalyzed Reactions

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