title: Presence of synaptic and muscular spindle-like structures in the atrioventricular junction of the rat heart: an electron microscopic study.
mesh_terms: D000818:Animals; D001283:Atrioventricular Node / Q000648:ultrastructure*; D005260:Female; D006329:Heart Conduction System / Q000648:ultrastructure*; D008297:Male; D008854:Microscopy, Electron; D009470:Muscle Spindles / Q000648:ultrastructure*; D009475:Neurons, Afferent / Q000648:ultrastructure; D009476:Neurons, Efferent / Q000648:ultrastructure; D051381:Rats; D013569:Synapses / Q000648:ultrastructure*; D013572:Synaptic Vesicles / Q000648:ultrastructure