Interestingly , in CIITA -transfected cell hybrids , cell surface expression of the human HLA-DQ heterodimer was not observed .
interestingly , in ciita -transfected cell hybrids , cell surface expression of the human hla-dq heterodimer was not observed .
O O O B-protein_molecule O O O O O O O O O B-protein_complex I-protein_complex I-protein_complex O O O O