Cell cycle in the primitive streak and the notochord of early chick embryos.
D000367:Age Factors; D000818:Animals; D001345:Autoradiography; D002455:Cell Division; D002642:Chick Embryo / Q000166:cytology*; D013936:Thymidine; D014316:Tritium
D014316:Tritium; D013936:Thymidine