ACUTE CNS SYNDROME OF BURROS 



507 



Fig. 3. Head-irradiated burro. 485 r, survival time 28 hours. Perivascular cuffing 

 (neutrophils, arrow) in the cerebral white matter. X 700. 



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Fig. 4. Head-irradiated burro. 485 r. survi\al time 24 hours. Congestion, hemor- 

 rhage, and neutrophilic infiltration (arrow), choroid plexus. 4th ventricle. X 175. 



