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  • Overview of Polioencephalomalacia
  • Transverse section of the dorsal parietal cortex of a feedlot steer with polioencephalomalacia

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    Transverse section of the dorsal parietal cortex of a feedlot steer with polioencephalomalacia

    Transverse section of the dorsal parietal cortex of a feedlot steer with polioencephalomalacia. Upper panel—macroscopic view under ambient illumination. Affected segments of the cortical gray matter have a yellowish discoloration and irregular contours. Lower panel—same section viewed with ultraviolet (366 nm) illumination. Affected segments and foci of the cortical gray matter have a bright, light blue hue compared to the darker blue of adjacent, normal cortex.

    Courtesy of Dr. Daniel H. Gould.

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