Biology 546
Human parasitology laboratory tutorial

The fully sporulated oocyst on the left was from a population of oocysts found following a flotation of a stool from an AIDS patient. Oocysts averaged about 8.4 micrometers long x 6.2 micrometers wide. What species is represented?

Cryptosporidium muris
Cryptosporidium parvum
Isospora belli
Sarcocystis hominis

Original. Photograph by S.J. Upton

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