These defects are paralleled by an impaired ability to produce Th1 cytokines ( IL-2 and IFN-gamma ) .
these defects are paralleled by an impaired ability to produce th1 cytokines ( il-2 and ifn-gamma ) .
O O O O O O O O O O B-protein_family_or_group B-protein_family_or_group O B-protein_molecule O B-protein_molecule O O