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Washington University Experience | INFECTION | Viruses | PML (JC Virus) | PML - Granule Cell Neuronopathy | 1H2 Granule cell neuronopathy (Case 1 Autopsy specimen) N14 JCV ISH 6 copy
In situ hybridization for JC Virus shows scattered labeled atypical Bergmann astrocytes in the Purkinje cell layer (arrowheads). There were no labeled granule cells (see 1H5,6).