In the present work , we have investigated the mechanism ( s ) whereby Tax transactivates the c-sis/PDGF-B proto-oncogene .
in the present work , we have investigated the mechanism ( s ) whereby tax transactivates the c-sis/pdgf-b proto-oncogene .
O O O O O O O O O O O O O O B-protein_molecule O O B-protein_molecule O O