it is hypothesized that the normal lyb-5- b cell subpopulation is heterogeneous , consisting of an lyb-5 ( 1 ) - and an lyb-5 ( 2 ) -b cell subset with the xid mutation blocking the differentiation of lyb-5 ( 1 ) -b cells into lyb-5 ( 2 ) -b cells .
C0007634
normal
C0007589
differentiation