Merck Manual

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Fasciola hepatica, egg
fasciola-hepatica-egg-ballweber-sized
Fasciola hepatica, egg

    Photomicrograph ofF hepatica egg found on fecal sedimentation. A drop of methylene blue added to the sediment provides contrasting background, making the egg easier to see. Scale bar = 30 mcm.

Courtesy of Dr. Lora Ballweber.