Fig. 2

Longitudinal section of semimembranosus muscle (A-C) stained using hematoxylin and eosin. A Wild-type calf demonstrating normal muscle morphology. B Calf A, an affected calf, shows only mild vacuolation and fiber separation. C Calf B, an affected calf, shows loss of cross striations and hypereosinophilia of cytoplasm typical of myodegeneration and necrosis in addition to fiber separation