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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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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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Everyone has one nostril that is larger than the other.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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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.