The function of a putative NFAT-1 site in the human immunodeficiency virus type 1 enhancer has been analyzed .
the function of a putative nfat-1 site in the human immunodeficiency virus type 1 enhancer has been analyzed .
O O O O B-DNA_domain_or_region B-protein_molecule O O O B-virus I-virus I-virus I-virus I-virus O O O O O