Merck Manual

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Nematodirus eggs
nematodirus-eggs-vanhoy-sized
Nematodirus eggs

    The eggs of ruminant-infecting Nematodirus spp (arrowhead) are distinct from those of other trichostrongyles (arrow) because of their large size and the large number of distinctive, large cells (2–8) within the egg.

Courtesy of Dr. Grace VanHoy.