Progenitor cells of the definitive erythroid series in the chick embryo.
D000818:Animals; D001345:Autoradiography; D002642:Chick Embryo / Q000254:growth & development*; D004247:DNA / Q000096:biosynthesis; D004912:Erythrocytes / Q000378:metabolism; D005321:Extraembryonic Membranes; D013936:Thymidine; D014316:Tritium
D014316:Tritium; D004247:DNA; D013936:Thymidine