Biology 546
Human parasitology laboratory tutorial

The egg on the left was found in the feces of a young girl in Manhattan, Kansas. Other eggs with thicker, more mammilated walls and of similar size were noted. The egg measured about 60 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