The class II major histocompatibility complex gene HLA-DRA is expressed in B cells , activated T lymphocytes , and in antigen-presenting cells .
the class ii major histocompatibility complex gene hla-dra is expressed in b cells , activated t lymphocytes , and in antigen-presenting cells .
O B-protein_complex I-protein_complex I-protein_complex I-protein_complex I-protein_complex O B-DNA_domain_or_region O O O B-cell_type I-cell_type O O B-cell_type I-cell_type O O O B-cell_type I-cell_type O