The repetitive activation of T cells ( priming ) enhances the expression of many cytokines , such as IL-4 , but not others , such as IL-2 .
the repetitive activation of t cells ( priming ) enhances the expression of many cytokines , such as il-4 , but not others , such as il-2 .
O B-other_name I-other_name O B-cell_type I-cell_type O O O O O O O O B-protein_family_or_group O O O O O O O O O O O B-protein_molecule O