Biology 546
Human parasitology laboratory tutorial

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

Photograph courtesy Dr. Donald W. Duszynski, University of New Mexico.

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Kansas State University | Biology Division