Divergent Astrovirus Associated with Neurologic Disease in Cattle
Figure 2. . Yearling steer with encephalomyelitis. Midsagittal section of brain and multiple transverse sections of cerebellum, brainstem, and spinal cord depicting the location and severity of microscopic lesions. Midsagittal section of the brain: red highlight indicates areas of the central nervous system affected, numbers indicate severity of the lesions (1 = least severe; 2 = more severe; 3 = most severe), and red lines (A, B, C, D) indicate the levels where transverse sections were cut. A, spinal cord. B, medulla oblongata. C, cerebellum and cerebellar peduncles. D, midbrain (superior colliculus). Cross-sections of brainstem, cerebellum, and spinal cord: red dots indicate sites and relative intensity of microscopic lesions.