禽脑脊髓炎，脑部病变，组织病理学

Photomicrograph of a histologic section of the medulla oblongata of a chick with avian encephalomyelitis. Lesions include central chromatolysis of neurons, neuronal necrosis and satellitosis, neuronophagia, and gliosis. H&E stain; original magnification = 1000×.