Fig. 3
a Granulomas multifocal to coalescing in meningeal tuberculosis cause by Mycobacterium spp. in a bovine. a Section of the brain shows a granulomatous inflammatory infiltrate in the meninges indicated by arrows. The close-up shows a granuloma composed of numerous epithelioid macrophages and multinucleated giant cells, a necrotic area with mineralization and a thin fibrous connective tissue capsule. b Ziehl Neelsen stain shows acid fast bacilli indicated by arrows