title: Two different populations of primitive erythroid cells in the ehick embryo.
mesh_terms: D000818:Animals; D002642:Chick Embryo / Q000166:cytology*; D003429:Cross Reactions; D004912:Erythrocytes / Q000378:metabolism*; D005455:Fluorescent Antibody Technique; D006454:Hemoglobins / Q000276:immunology / Q000378:metabolism*
chemical_list: D006454:Hemoglobins