Chloramphenicol acetyl transferase ( CAT ) assays using the HIV-1 ( -139 ) long terminal repeat-CAT construct showed no PMA induction of CAT activity in these subclones ( unlike the parental line and other subclones ) .
chloramphenicol acetyl transferase ( cat ) assays using the hiv-1 ( -139 ) long terminal repeat-cat construct showed no pma induction of cat activity in these subclones ( unlike the parental line and other subclones ) .
B-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O O O B-virus O O O O O O O O O B-other_organic_compound O O B-protein_molecule O O O O O O O O O O O O O O