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Washington University Experience | NEOPLASMS - CRANIAL AND PARASPINAL NERVEs | Schwannoma | 20D3 Schwannoma w whorls (Case 20) Coll IV 2.jpg
There is strong staining for collagen IV (CollIV IHC). ---- Not shown: The tumor is negative for EMA and progesterone receptor. The Ki-67 proliferative index is 3.7%.
