Tadpoles, chicks, and red cells: a study of development.
D000818:Animals; D001001:Anura / Q000196:embryology / Q000378:metabolism*; D002454:Cell Differentiation; D002642:Chick Embryo / Q000378:metabolism*; D004912:Erythrocytes / Q000378:metabolism*; D004920:Erythropoiesis / Q000502:physiology; D006454:Hemoglobins / Q000096:biosynthesis*; D013974:Thyroxine / Q000502:physiology
D006454:Hemoglobins; D013974:Thyroxine