normal human b cells and leukaemic b-cell populations in common-type cll undergo sequential shifts in proportions of the three b-cell subsets , defined by expression of mouse erythrocyte receptors r1 and r2 , during tpa-induced differentiation to plasmacytoid cells in vitro , suggesting that the b-cell differentiation pathway is r1 +r2+ leads to r1 -r2+ leads to r1 -r2- leads to immature plasmacyte .
C0004561
b-cell
C1511002
b-cell