Merck Manual

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Trichostrongyle eggs
Trichostrongyle eggs

    Typical trichostrongyle eggs (sometimes called "strongyle-type eggs" or "strongyles"), such as those pictured in this photomicrograph, are ellipsoid, have thin walls, and contain a morula. An end-on trichostrongyle egg is visible in the lower right corner of this image (arrowhead). The eggs of trichostrongyle parasites in the GI tract of ruminants are not easily distinguishable and require additional diagnostics to determine the specific genus. Plant debris (P) and blurry coccidia (C) are also visible in this image.

Courtesy of Dr. Grace VanHoy.