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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.