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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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Excessive alcohol use costs the country approximately $235 billion every year.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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