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Washington University Experience | NEOPLASMS (EMBRYONAL) | ATRT - Atypical Teratoid Rhabdoid Tumor | 19E1 ATRT (Case 19) GFAP 20X
19E1,2 GFAP is largely negative; however, there are scattered cells, either entrapped or labeling very rare tumor cells. (GFAP IHC).
