title: Histologic and histochemical evidence concerning the presence of morphologically distinct cellular zones within the rabbit atrioventricular node.
mesh_terms: D000110:Acetylcholinesterase / Q000032:analysis; D000818:Animals; D002395:Catecholamines / Q000032:analysis; D002802:Cholinesterases / Q000032:analysis; D006329:Heart Conduction System / Q000032:analysis / Q000033:anatomy & histology* / Q000201:enzymology; D006651:Histocytochemistry; D008722:Methods; D008854:Microscopy, Electron; D008856:Microscopy, Fluorescence; D009210:Myofibrils; D011817:Rabbits / Q000033:anatomy & histology*; D013194:Staining and Labeling
chemical_list: D002395:Catecholamines; D000110:Acetylcholinesterase; D002802:Cholinesterases