Regulation of the embryo after the extirpation of Hensen's node. Consequences on the differentiation of the otic placode.
D000818:Animals; D001921:Brain / Q000196:embryology*; D002454:Cell Differentiation; D002642:Chick Embryo; D004423:Ear / Q000196:embryology*; D008636:Mesencephalon / Q000473:pathology; D008648:Mesoderm / Q000502:physiology