Neuromuscular junctions in the leech.
D000109:Acetylcholine; D000818:Animals; D006651:Histocytochemistry; D007865:Leeches / Q000033:anatomy & histology*; D008854:Microscopy, Electron; D009469:Neuromuscular Junction; D009638:Norepinephrine; D012701:Serotonin; D013572:Synaptic Vesicles
D012701:Serotonin; D000109:Acetylcholine; D009638:Norepinephrine