title: The development of the sinu-atrial node in the mouse.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004727:Endothelium / Q000648:ultrastructure; D006321:Heart / Q000196:embryology; D008648:Mesoderm / Q000648:ultrastructure; D051379:Mice / Q000196:embryology; D009206:Myocardium / Q000648:ultrastructure; D012849:Sinoatrial Node / Q000196:embryology* / Q000648:ultrastructure