Fig. 9.
Effect of RBL/PR3 CM on the S-phase fraction of CFU-GM within a CD34+ cell population isolated by cell sorting (mean values ± SD, n = 8). The number of colonies in the controls varied from 52 to 176 (mean, 98) per dish in these experiments. The asterisk denotes significant reduction of CFU-GM in S-phase (P< .01).