Fig. 7.
B-cell precursors are more enriched than NK-cell precursors among the IL-7Rα+ subset of Lin−bone marrow cells.
The Lin− c-kitLo Flk-2/Flt3+fraction of bone marrow was isolated and further sorted into IL-7Rα+ and IL-7Rα− subsets before culture with SCF, FL, IL-7, and IL-15. Absolute numbers of recovered B (CD19+) and NK (DX5+) cells were determined by flow cytometry and calculated according to yield per input cell.