CIITA B-cell-specific promoter suppression in MHC class II -silenced cell hybrids .
ciita b-cell-specific promoter suppression in mhc class ii -silenced cell hybrids .
B-protein_molecule B-DNA_domain_or_region I-DNA_domain_or_region O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O