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Veterinary /
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Onchocerca nodule, conjunctiva, horse
Onchocerca nodule, conjunctiva, horse

Onchocerca raised, white nodule in the pigmented conjunctiva, horse

Courtesy of Dr. Cecil Moore

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Eyeworms of Large Animals

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Merck & Co., Inc., Kenilworth, NJ, USA is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Manual outside of North America.

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