Granular cell tumors contain myelin-associated glycoprotein

Abstract
An immunohistochemical staining procedure using Leu 7 (HNK-1) monoclonal antibody was used to study the distribution of myelin-associated glycoprotein in granular cell tumours. Positive reactions were noted in 10 of the 13 tumours investigated. This observation supports the concept that granular cell tumours are of Schwann cell origin.