title: The morphologic development of the sinoatrial node in the mouse.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D005260:Female; D005865:Gestational Age; D006652:Histological Techniques; D051379:Mice; D008867:Microtomy; D009024:Morphogenesis; D011247:Pregnancy; D012849:Sinoatrial Node / Q000033:anatomy & histology / Q000196:embryology* / Q000254:growth & development; D013895:Thoracic Arteries / Q000196:embryology