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Washington University Experience | NEOPLASMS (EMBRYONAL) | Medulloblastoma, Histologically Defined | Extensive Nodularity (MBEN) | 1G3 Medulloblastoma, nodular (Case 1) MIB 3A

Higher magnification showing reactivity for proliferation marker Ki67 (MIB-1 antibody) is estimated to be present in ~50% of the stromal tumor tissue nuclei, and in less than 1% of pale island nuclei. (Ki67 IHC)

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