Atrioventricular node innervation in ultrastructural three dimensions.
D000818:Animals; D003094:Collagen; D006329:Heart Conduction System / Q000166:cytology*; D051379:Mice; D008854:Microscopy, Electron; D009451:Neuroeffector Junction / Q000166:cytology; D009469:Neuromuscular Junction / Q000166:cytology*; D009474:Neurons / Q000166:cytology
D003094:Collagen