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Washington University Experience | NEOPLASMS (EMBRYONAL) | ETMR - Embryonal Tumor Multilayered Rosettes | 3F3 ETANTR (Case 3) Ki67 5.jpg
This is an area of perivascular pseudorosettes which is rich in primitive cells with marked immunolabeling for Ki67, reaching nearly 100% in some areas. (Ki67 IHC)
