title: Electron cytochemical demonstration of -SH groups in the synaptic vesicles of photoreceptor cells with the mixture of zinc iodide-osmium tetroxide.
mesh_terms: D000818:Animals; D006651:Histocytochemistry; D008854:Microscopy, Electron / Q000379:methods; D010786:Photoreceptor Cells / Q000648:ultrastructure*; D051381:Rats; D012160:Retina / Q000648:ultrastructure; D013194:Staining and Labeling; D013438:Sulfhydryl Compounds; D013572:Synaptic Vesicles / Q000648:ultrastructure*
chemical_list: D013438:Sulfhydryl Compounds