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There are more bacteria in your mouth than there are people in the world.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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