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The black and white photographmicrograph on the left was
presented to you by a
physician here in town and is of a sporulated oocyst derived from the
feces of an AIDS patient. The oocyst measures about 30 micrometers in
length, was passed in the feces unsporulated and required about three days
to fully sporulate, and represents what species?
Cryptosporidium parvum
Cyclospora cayetanesis
Isospora belli
Sarcocystis hominis
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