tokens: Substantial decreases of IL-2 production were observed for cell cultures from 7 of 12 elderly individuals in response to the different stimuli , whereas the levels of IL-2 produced by stimulated T cells from other elderly individuals were equivalent to those observed for stimulated T cells of young subjects .
folded_tokens: substantial decreases of il-2 production were observed for cell cultures from 7 of 12 elderly individuals in response to the different stimuli , whereas the levels of il-2 produced by stimulated t cells from other elderly individuals were equivalent to those observed for stimulated t cells of young subjects .
labels: O O O B-protein_molecule O O O O O O O O O O B-multi_cell I-multi_cell O O O O O O O O O O O B-protein_molecule O O O B-cell_type I-cell_type O O B-multi_cell I-multi_cell O O O O O O O O O O B-multi_cell I-multi_cell O