title: Ultrastructural and histochemical studies on the innervation of the heart of a teleost, Pleuronectes platessa L.
mesh_terms: D000110:Acetylcholinesterase / Q000032:analysis; D000818:Animals; D001369:Axons; D004298:Dopamine / Q000494:pharmacology; D005399:Fishes / Q000033:anatomy & histology*; D006325:Heart Atria; D006329:Heart Conduction System / Q000166:cytology*; D006651:Histocytochemistry; D008854:Microscopy, Electron; D012110:Reserpine / Q000494:pharmacology; D014630:Vagus Nerve / Q000166:cytology
chemical_list: D012110:Reserpine; D000110:Acetylcholinesterase; D004298:Dopamine