Scanning electron microscopic study on the formation of the atrial septum in rat embryos.
D000818:Animals; D005260:Female; D006325:Heart Atria; D006346:Heart Septum / Q000196:embryology* / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains / Q000196:embryology*