[On the determinism of bilateral symmetry in birds. XIII. The factors in the orientation of the embryo in relation to the axis of the egg and von Baer's rule, in the light of our controlled orientation experiments on the hen egg extracted from the uterus].
D000818:Animals; D001717:Birds / Q000196:embryology*; D002645:Chickens; D005260:Female; D006801:Humans; D014599:Uterus
BIRDS/embryology