Recently , transcription factors known as STATs ( signal transducers and activators of transcription ) have been shown to be tyrosine phosphorylated and activated in response to a number of cytokines that bind hematopoietin receptors and activate JAK kinases .
recently , transcription factors known as stats ( signal transducers and activators of transcription ) have been shown to be tyrosine phosphorylated and activated in response to a number of cytokines that bind hematopoietin receptors and activate jak kinases .
O O B-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O O B-amino_acid_monomer O O O O O O O O O B-protein_family_or_group O O B-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group I-protein_family_or_group O