The expression of the antibody-encoding genes , the immunoglobulin ( Ig ) genes , is also restricted to B cells .
the expression of the antibody-encoding genes , the immunoglobulin ( ig ) genes , is also restricted to b cells .
O B-other_name O O B-DNA_family_or_group I-DNA_family_or_group O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O O O O O B-cell_type I-cell_type O