Summary of huCD45⁺ cell subpopulations found in mouse BM (A), spleen (B), and PB (C). The percent of the huCD45⁺ population that also expressed human myeloid cell (CD13/33⁺ and CD14⁺), B cell (CD19⁺), erythroid progenitor cell (gA⁺71⁺45⁻), and CD34⁺ cell surface markers is shown for all samples analyzed from experiments 1 through 8. Median values are shown above each subpopulation. Samples are identified from experiments 1 (▴, ▵) and 2 (▪, □) where mice received either 10 μg each of human: IL-3, SCF, and GM-CSF, three times per week (▴, ▪), or received no growth factor treatments (▵, □).