tokens: We investigated the regulation of thymidine kinase in phytohemagglutinin -stimulated normal human lymphocytes and in the p16 -negative human acute lymphoblastic leukemia cell lines , MOLT-4 and CEM .
folded_tokens: we investigated the regulation of thymidine kinase in phytohemagglutinin -stimulated normal human lymphocytes and in the p16 -negative human acute lymphoblastic leukemia cell lines , molt-4 and cem .
labels: O O O O O B-protein_family_or_group I-protein_family_or_group O B-protein_molecule O O O O O O O B-protein_molecule O O O O O O O O B-cell_line O B-cell_line O