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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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The human body produces and destroys 15 million blood cells every second.

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The average office desk has 400 times more bacteria on it than a toilet.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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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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