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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
The average adult has about 21 square feet of skin.
On average, the stomach produces 2 L of hydrochloric acid per day.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
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