Fig. 3.
Phenotypic analysis of B-cell precursors in CD69 (-/-) and wild-type bone marrow.
(A-C) Two-color immunofluorescence analysis with anti-B220 and anti-CD69 monoclonal antibody shows that B220+CD69+ cells are enriched in the B220int lymphocyte fraction. In CD69 (-/-) mice, the increase in IgM−B220+ and HSA+B220+ cell subsets is also shown.