The activation of Jak 2 was studied by autophosphorylation of the immunoprecipitated kinase .
the activation of jak 2 was studied by autophosphorylation of the immunoprecipitated kinase .
O O O B-protein_family_or_group I-protein_family_or_group O O O B-other_name O O B-protein_domain_or_region I-protein_domain_or_region O