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Washington University Experience | NEOPLASMS (GLIAL) | Glioblastoma, primitive neuronal component | 3B2 GBM with PNET features (Case 3) Area A GFAP 4X.jpg
3B2,3 Higher magnification of image #3B1 showing the absence of GFAP immunoreactivity in primitive cell areas (GFAP IHC)