exogenous bone marrow colonies in lethally irradiated mice injected with bone marrow cells were proportional in number to the dose of cells injected , appeared at a time comparable to spleen colonies like which , at 7 or 8 days , they were of single differentiated cell line , either granuloid or erythroid or megakaryocytic , with a small percentage of `` '' mixed '' '' colonies .
C0007634
cells
C0007589
differentiated