title: The effect of embryonic x-irradiation on the approach and following response in newly hatched chicks.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001522:Behavior, Animal; D002642:Chick Embryo / Q000528:radiation effects; D003423:Critical Period, Psychological; D005260:Female; D007173:Imprinting, Psychological; D011247:Pregnancy; D011270:Pregnancy, Animal; D011830:Radiation Effects