tokens: In the current studies , IL-2 production by T cells from elderly ( mean 78 years ) and young ( mean 37 years ) humans was measured in cultures stimulated with PHA , PHA plus PMA , crosslinked anti-CD3 mAB OKT3 plus PMA , or PMA plus ionomycin .
folded_tokens: in the current studies , il-2 production by t cells from elderly ( mean 78 years ) and young ( mean 37 years ) humans was measured in cultures stimulated with pha , pha plus pma , crosslinked anti-cd3 mab okt3 plus pma , or pma plus ionomycin .
labels: O O O O O B-protein_molecule O O B-cell_type I-cell_type O B-multi_cell O O O O O O B-multi_cell I-multi_cell I-multi_cell I-multi_cell I-multi_cell I-multi_cell I-multi_cell O O O O O O B-protein_molecule O B-protein_molecule O B-other_organic_compound O O O O O O B-other_organic_compound O O B-other_organic_compound O B-other_organic_compound O