Jejunum; cow, 9-years-old. Nodular, non-encapsulated, granulomatous inflammation in the sub-mucosa (black arrows) and a single multinucleated giant cell (long white arrow) in the lamina propria mucosae. Acid-fast bacilli were demonstrated in ZN stained section of the lesion. m = mucosa, s = sub-mucosa, short white arrows = lamina muscularis mucosae. HE. Bar = 160 μm.