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Washington University Experience | NEOPLASMS - CRANIAL AND PARASPINAL NERVEs | Perineurioma, Intraneural | 3C1 Perineurioma (Case 3) EMA 20X nl area.jpg
This is the margin of the specimen with a mostly normal endoneurial appearance stained for EMA, which marks the perineurium. (EMA IHC)