By contrast , the MAP kinases ERK1 and ERK2 were fully activated by TPA or TCR stimulation and were not affected by Ca2+ , CD28 , or CsA .
by contrast , the map kinases erk1 and erk2 were fully activated by tpa or tcr stimulation and were not affected by ca2+ , cd28 , or csa .
O O O O B-protein_family_or_group I-protein_family_or_group B-protein_molecule O B-protein_molecule O O O O B-other_organic_compound O B-protein_family_or_group O O O O O O B-atom O O O O B-other_organic_compound O