tokens: These concentrations are lower than concentrations reported to activate effector function of CTL recognizing other epithelial tumor Ag .
folded_tokens: these concentrations are lower than concentrations reported to activate effector function of ctl recognizing other epithelial tumor ag .
labels: O O O O O O O O O O O O B-other_name I-other_name O B-protein_molecule I-protein_molecule I-protein_molecule O