The rex gene encodes two protein products , p27rex /p21rex and p26rex /p24rex in HTLV-I and HTLV-II , respectively .
the rex gene encodes two protein products , p27rex /p21rex and p26rex /p24rex in htlv-i and htlv-ii , respectively .
O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-protein_molecule B-protein_molecule O B-protein_molecule B-protein_molecule O B-virus O B-virus O O O