Analysis of endoderm formation in the avian blastoderm by the use of quail-chick chimaeras. The problem of the neurectodermal origin of the cells of the APUD series.
D001078:APUD Cells; D000818:Animals; D001756:Blastoderm; D002642:Chick Embryo; D002678:Chimera; D004707:Endoderm / Q000166:cytology; D007422:Intestines / Q000196:embryology; D009420:Nervous System / Q000196:embryology; D010614:Pharynx / Q000196:embryology; D011784:Quail; D013997:Time Factors