The corresponding region in the second AIDS retrovirus , HIV-2 , contains a conserved and a divergent NF kappa B binding site .
the corresponding region in the second aids retrovirus , hiv-2 , contains a conserved and a divergent nf kappa b binding site .
O O O O O B-virus I-virus I-virus O B-virus O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O