Merck Manual

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Parapox virus, pseudocowpox, cow
Parapox virus, pseudocowpox, cow

    The parapox virus of pseudocowpox (electron microscopy, low magnification of 20,000x) in a skin scraping from a clinically affected cow, visualized by mixing a heavy metal stain (phosphotungstic acid) with a suspension of the skin scraping. The viruses of contagious ecthyma and bovine papular stomatitis are indistinguishable.

Courtesy of Dr. Paul Gibbs.

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Pseudocowpox in Cattle