Ultrastructure investigations into the impulse-generating centre in the heart of the European pond turtle (Emys orbicularis).
D000818:Animals; D006321:Heart / Q000033:anatomy & histology / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology*; D009206:Myocardium / Q000166:cytology / Q000648:ultrastructure*; D012849:Sinoatrial Node / Q000033:anatomy & histology / Q000166:cytology / Q000502:physiology; D014426:Turtles / Q000033:anatomy & histology*