Biology 546
Human parasitology laboratory tutorial

The photograph on the left is of an acid fast stained fecal smear. Within that smear were a low number of spherical blobs of reddish cytoplasm. The patient complained of diarrhea and abdominal cramping, which started a little over a week after visiting Peru. Each reddish blob measured about 7-8 micrometers in diameter. What species is represented?

Cryptosporidium parvum
Cyclospora cayetanensis
Enterocytozoon bieneusi
Isospora belli

Original; photograph by S.J. Upton.

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Kansas State University | Biology Division