however , leukaemic cells of fab subclass m1 significantly more often expressed hla class i antigen than those of fab subclass m5a , whereas fc gamma receptors which were expressed only on a few cells in m5a , were increasingly frequent on leukaemic cells of m1-m2 , m4 , and m5b leukaemias .
C1517806
leukaemic cells
C0457334
fab