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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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There are 20 feet of blood vessels in each square inch of human skin.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").