Several intracellular signaling proteins , such as CBL and VAV , were phosphorylated on tyrosine in response to CD80 , CD86 , and anti-CD28 mAb .
several intracellular signaling proteins , such as cbl and vav , were phosphorylated on tyrosine in response to cd80 , cd86 , and anti-cd28 mab .
O O B-protein_family_or_group I-protein_family_or_group O O O B-protein_molecule O B-protein_molecule O O O O B-amino_acid_monomer O O O B-protein_molecule O B-protein_molecule O O B-protein_molecule I-protein_molecule O