Biology 546
Human parasitology laboratory tutorial

The egg on the left was found in the feces of a 19 year old Kansas State University student who hails from Alabama. The egg measured about 70 micrometers long x 38 micrometers wide. What species does it represent?

Ascaris lumbricoides
Enterobius vermicularis
Necator americanus
Trichuris trichiura

Original; photograph by S. J. Upton

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