title: Reciprocal synapses between cholinergic postganglionic axon and adrenergic interneuron in the cardiac ganglion of the turtle.
mesh_terms: D000818:Animals; D001369:Axons / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005724:Ganglia / Q000648:ultrastructure*; D006321:Heart / Q000294:innervation; D008854:Microscopy, Electron; D009474:Neurons / Q000648:ultrastructure*; D011950:Receptors, Cholinergic; D013569:Synapses / Q000648:ultrastructure*; D014426:Turtles; D014628:Vagotomy
chemical_list: D011950:Receptors, Cholinergic