Biology 546
Human parasitology laboratory tutorial

The egg on the left was found in the feces of an individual returning from Bolivia after a 2 month research field trip. The egg measured about 90 micrometers in length x 45 micrometers in width. What species does it represent?

Ascaris lumbricoides
Necator americanus
Schistosoma haematobium
Trichuris trichiura

Original; photograph by S. J. Upton


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Kansas State University | Biology Division