An osmiophilic substance in brain synaptic vesicles not associated with catecholamine content.
D000818:Animals; D001345:Autoradiography; D001923:Brain Chemistry; D008854:Microscopy, Electron; D009411:Nerve Endings / Q000032:analysis; D009638:Norepinephrine / Q000032:analysis; D009992:Osmium; D051381:Rats; D013569:Synapses / Q000032:analysis*; D014316:Tritium
D014316:Tritium; D009992:Osmium; D009638:Norepinephrine