Biology 546
Human parasitology laboratory tutorial

The photograph on the left is an acid fast stain of a fecal smear. The reddish structures measure about 4.5 to 5.0 micrometers in diameter and were found in the feces of an 3rd year veterinary student experiencing diarrhea and abdominal cramping. What species is represented?

Cryptosporidium parvum
Cyclospora cayetanensis
Enterocytozoon bieneusi
Isospora belli

Original; photograph by S. J. Upton

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