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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Vet Pathol. 2013 Dec 13;51(5):903–914. doi: 10.1177/0300985813513040

Figure 15.

Figure 15

Field vole with M. microti tuberculous lesions in the lung. (a) Nondemarcated granulomatous infiltrate (highlighted with asterisks) with a few perivascular lymphocyte infiltrates in the periphery (arrows). HE stain. (b) Within the granulomatous infiltrate, bronchi exhibit focal loss of epithelial cells (highlighted by asterisks) and mild neutrophil and macrophage infiltration (arrowhead). The lumen of the bronchi is filled with exudate containing acid-fast bacilli, both cell free and within macrophages. ZN stain.