tokens: Using a monoclonal antibody , Lt-4 , directed against human T cell leukemia virus type I ( HTLV-I ) trans-activator ( tax1 ) antigen , we examined the expression of tax1 and related antigens in a variety of T cell lines bearing HTLV-I and related retroviruses , simian T cell leukemia virus type I ( STLV-I ) and HTLV-II , by immunofluorescence and immunoblot assays .
folded_tokens: using a monoclonal antibody , lt-4 , directed against human t cell leukemia virus type i ( htlv-i ) trans-activator ( tax1 ) antigen , we examined the expression of tax1 and related antigens in a variety of t cell lines bearing htlv-i and related retroviruses , simian t cell leukemia virus type i ( stlv-i ) and htlv-ii , by immunofluorescence and immunoblot assays .
labels: O O B-protein_family_or_group I-protein_family_or_group O B-protein_molecule O O O B-virus I-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O O B-protein_molecule O O O O O O O O B-protein_molecule O O B-protein_family_or_group O O O O B-cell_line I-cell_line I-cell_line O B-virus O O B-virus O B-virus I-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O B-virus O O O O O O O