IL-4 conducts its biological activities through binding to the IL-4 receptor ( IL-4R ) on the surface of target cells .
il-4 conducts its biological activities through binding to the il-4 receptor ( il-4r ) on the surface of target cells .
B-protein_molecule O O O O O O O O B-protein_molecule O O B-protein_family_or_group O O O O O B-cell_type I-cell_type O