This endogenous IFN was also shown to play a role in maintaining the basal level of expression of the major histocompatibility class I genes in lymphoid cells .
this endogenous ifn was also shown to play a role in maintaining the basal level of expression of the major histocompatibility class i genes in lymphoid cells .
O B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O O O O O 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 B-cell_type I-cell_type O