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Updated: Jul 19, 2026

Intradermal Inoculation of Mycobacterium avium in the Mouse Ear
Published on: July 3, 2025
Lymphoma and Mycobacterium avium infection in a ferret (Mustela putorius furo)
Geoffrey K Saunders1, Bruce V Thomsen
1College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA.
Abstract:
A 6-year-old, neutered male ferret presented with weight loss. Radiography revealed an enlarged liver and other abdominal masses. The ferret was euthanized, and at necropsy, the stomach wall was thickened, mesenteric lymph nodes were enlarged, and the liver contained multifocal tan nodules. Histopathology confirmed lymphoma and granulomatous inflammation in all affected organs. Acid-fast bacilli were present in the lesions and were confirmed to be Mycobacterium avium by PCR.
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