Atrioventricular node and Purkinje fibers of the guinea pig heart.
D000818:Animals; D002454:Cell Differentiation; D003896:Desmosomes / Q000502:physiology; D004553:Electric Conductivity; D006168:Guinea Pigs; D006329:Heart Conduction System / Q000166:cytology*; D008853:Microscopy; D008854:Microscopy, Electron; D012849:Sinoatrial Node / Q000166:cytology*