title: The innervation of the frog's heart. I. An examination of the autonomic postganglionic nerve fibres and a comparison of autonomic and sensory ganglion cells.
mesh_terms: D000818:Animals; D001001:Anura; D004950:Esterases / Q000032:analysis; D005725:Ganglia, Autonomic / Q000166:cytology* / Q000201:enzymology; D006321:Heart / Q000294:innervation*; D009413:Nerve Fibers, Myelinated / Q000166:cytology; D009474:Neurons / Q000166:cytology*
chemical_list: D004950:Esterases