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Washington University Experience | NEOPLASMS (EMBRYONAL) | Medulloblastoma, Histologically Defined | Extensive Nodularity (MBEN) | 2G1 Medulloblastoma, focal nodularity (Case 2) b-catenin 2.jpg
2G1,2 Beta catenin immunoreactivity shows only cytoplasmic staining with no nuclear immunoreactivity.
