In conclusion , we show that CD3 ligation by mAb and SE triggers a rapid , PP1 -sensitive tyrosine and serine phosphorylation of Stat3 in human CD4+ T cells .
in conclusion , we show that cd3 ligation by mab and se triggers a rapid , pp1 -sensitive tyrosine and serine phosphorylation of stat3 in human cd4+ t cells .
O O O O O O B-protein_molecule O O B-protein_family_or_group O O O O O O B-protein_molecule O B-amino_acid_monomer O B-amino_acid_monomer O O B-protein_molecule O B-cell_type I-cell_type B-cell_type I-cell_type O