Top panel: Retina sections were labeled with antibodies directed against syntaxin 3 and the ribbon synapses and nuclear markers Ribeye/CTPB2. The synaptic layers (inner plexiform layer (IPL) and outer plexiform layer (OPL)) show strong syntaxin 3B labeling. INL, Inner nuclear layer, ONL, outer nuclear layer; GCL, ganglion cell layer.
Bottom panels: Higher magnifications of the OPl and IPL regions.
Scale bar = 20 μm.