B-lineage commitment prior to surface expression of B220 and CD19 on hematopoietic progenitor cells
Commitment of hematopoietic progenitor cells to B-lymphoid cell fate has been suggested to coincide with the development of PAX5-expressing B220(+)CD19(+) pro-B cells. We have used a transgenic reporter mouse, expressing human CD25 under the control of the B-lineage-restricted Igll1 (lambda 5) promoter to investigate the lineage potential of early progenitor cells in the bone marrow. This strategy
