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Washington University Experience | NEOPLASMS (PINEAL) | Pineocytoma | 1F Pineocytoma (Case 1) GFAP 20X
A glial fibrillary acidic protein (GFAP) shows numerous glial processes throughout the tumor but does not stain tumor cell bodies. It is difficult to gauge the contribution of glial processes to the pineocytomatous rosettes.
