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Author Question: In a(n) ________ system, an empty bin signals a need to fill it. (Read 22 times) |
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The human body produces and destroys 15 million blood cells every second.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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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.