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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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Asthma cases in Americans are about 75% higher today than they were in 1980.