Figure 5.
BLR1 expression on SHP1-deficient and wild-type B cells. (Top) BLR1 expression on IgM+IgDlo/− bone marrow B cells (immature) and IgM+IgD+ spleen B cells (mature) from a +/+ Ig-transgenic mouse. (Bottom) BLR1 expression on B220+ HEL-binding SHP1-deficient spleen cells from a mouse reconstituted 6 wk earlier with 20% mev/mev Ig-transgenic and 80% Rag1−/− bone marrow. The dotted line (control) shows staining with an irrelevant rabbit antiserum (top) or anti-BLR1 staining of T cells (bottom) as controls.