Since many cytokines that activate Jak kinases also lead to the tyrosine phosphorylation and activation of members of the Stat family of transcription factors , the ability of IL-2 to trigger Stat phosphorylation was examined .
since many cytokines that activate jak kinases also lead to the tyrosine phosphorylation and activation of members of the stat family of transcription factors , the ability of il-2 to trigger stat phosphorylation was examined .
O O B-protein_molecule O O B-protein_family_or_group B-protein_family_or_group O O O O B-other_name B-other_name O B-other_name O O O O B-protein_family_or_group I-protein_family_or_group O B-other_name O O O O O B-protein_molecule O O O B-other_name O O O