The expression of major histocompatibility complex ( MHC ) class II antigens is constitutive in professional antigen presenting cells ( APCs ) but can also be induced by interferon-gamma ( IFN-gamma ) on the majority of the non professional APCs ( e . g . fibroblasts ) .
the expression of major histocompatibility complex ( mhc ) class ii antigens is constitutive in professional antigen presenting cells ( apcs ) but can also be induced by interferon-gamma ( ifn-gamma ) on the majority of the non professional apcs ( e . g . fibroblasts ) .
O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O B-cell_type I-cell_type I-cell_type I-cell_type O B-cell_type O O O O O O O B-protein_molecule O B-protein_molecule O O O O O O O B-cell_type B-cell_type O O O O O B-cell_type O O