Chloramphenicol acetyltransferase ( CAT ) assay after transient cotransfection showed about a fivefold transactivation of the L-selectin promoter by Tax .
chloramphenicol acetyltransferase ( cat ) assay after transient cotransfection showed about a fivefold transactivation of the l-selectin promoter by tax .
B-protein_molecule I-protein_molecule O B-protein_molecule O O O B-other_name I-other_name O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-protein_molecule O