结核分枝杆菌：抗酸染色 免疫荧光 脾粟粒性肉芽肿性炎（大体） 肠系膜上淋巴结 巨噬细胞内见鸟型分枝杆菌
Microscopically, Mycobacterium avium-intracellulare infection is marked by numerous acid fast organisms growing within macrophages. Lots of bright red rods are seen, particularly in macrophages, in this acid fast stain of lymph node.