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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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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.