[Colony-forming capacity of the cells from various hempoietic organs of the quail embryo].

Colony-forming capacity of quail yolk sac and embryo was studied after 48 hours of incubation, and that of yolk sac, limb bud and heart germ of the quail embryo after 60 hours of incubation. The concentration of colony-forming units (CFUm) of the 48-hour embryo was shown to be one hundred times higher than that of the yolk sac both after 48 and 60 hours of incubation. The concentration of CFUm in the embryonic limb buds and heart germ after 60 hours of incubation was approximately the same and comparable to the concentration of CFUm in the 48-hour embryo.