tokens: Cell-to-cell contact between peripheral blood lymphocytes and transfected human colonic carcinoma cell line HT29 activates transcription of the long terminal repeats ( LTR ) of human immunodeficiency virus .
folded_tokens: cell-to-cell contact between peripheral blood lymphocytes and transfected human colonic carcinoma cell line ht29 activates transcription of the long terminal repeats ( ltr ) of human immunodeficiency virus .
labels: B-other_name I-other_name O B-cell_type I-cell_type I-cell_type O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O B-virus I-virus I-virus O