title: Congenital granular cell epulis. Immunohistochemical and ultrastructural observations.
abstract: Tumor cells of the congenital granular cell epulis (GCE), unlike those of the granular cell tumor (GCT), did not stain with antiserum to S-100 protein. Based on immunohistochemical findings it is concluded that the GCE and GCT differ in histogenesis; furthermore, ultrastructural studies of the authors are in agreement with others in supporting a mesenchymal origin of the GCE.
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D005881:Gingiva / Q000648:ultrastructure; D005882:Gingival Diseases / Q000151:congenital* / Q000378:metabolism / Q000473:pathology; D006101:Granuloma, Giant Cell / Q000151:congenital* / Q000378:metabolism / Q000473:pathology; D006801:Humans; D007124:Immunoenzyme Techniques; D007231:Infant, Newborn; D009418:S100 Proteins / Q000032:analysis
chemical_list: D009418:S100 Proteins