Summary of donor chimerism in 9:1 (KO/WT) chimeras. Shown is the summary of the data for the 9:1 (KO/WT) chimeric mice (n = 6-12). The mean percentage ± SD of the contribution of G-CSFR^-/- cells in each cell population is shown. Note that, on the basis of the original transplant, a G-CSFR^-/- percentage of 90% would be predicted in each lineage if no competitive advantage was present. ^*P < .05 when compared with the LTC-IC percentage.