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Washington University Experience | NEOPLASMS (GLIAL) | Glioblastoma, primitive neuronal component | 2D1 GBM, PNET (Case 2) Junction A 4X Ki67.jpg
Reactivity for proliferation marker Ki67 (MIB-1 antibody) stains approximately 20% of nuclei within the glioma component, and a significantly higher percentage (>90%) of nuclei within the PNC (Ki67).