By contrast , T cells from elderly subjects with normal levels of IL-2 production exhibited normal activation of AP-1 and NF-AT .
by contrast , t cells from elderly subjects with normal levels of il-2 production exhibited normal activation of ap-1 and nf-at .
O O O B-cell_type I-cell_type O B-multi_cell I-multi_cell O O O O B-protein_molecule O O O O O B-protein_molecule O B-protein_molecule O