Figure 6.
FL stimulates/costimulates proliferation of myeloid progenitor cells from marrows of Stat5a+/+ but not Stat5a−/− mice. Results are shown as the average percentage of control of cells incubated with 50 ng/ml SLF plus 10 ng/ml GM-CSF for a total of six experiments each. The control colony numbers upon which the percent of control are based were 52 ± 2 (mean ± 1 SEM), 70 ± 3, 89 ± 4, 60 ± 4, 152 ± 3, and 132 ± 2 for Stat5a−/− cells and 62 ± 3, 87 ± 3, 101 ± 8, 71 ± 2, 70 ± 2, and 55 ± 3 for Stat5a+/+ cells.