... subjected to routine histochemistry, [HE, PAS, reticulin] [8] enzyme histochemistry [Dopa Oxidase] and immunohistochemistry using the Avidin/Biotin system [HMB45, NFP, GFAP, Synaptophysin (Syn)], [BioGenex] ... melanocytes, perivascular and intervascular fibers positive for NFP Synaptophysin is a vesicular integral membrane protein specifically expressed in neural tissues [51] Synaptophysin labels small synaptic ... histologic staining methods of the Armed Forces Institute of Pathology , 1968, 33-46 Mikel UV: Advanced Laboratory Methods in Histology and Pathology American Registry of Pathology, Armed Forces Institute...