IL-4 secreted by activated T cells is a pleiotropic cytokine affecting growth and differentiation of diverse cell types such as T cells , B cells , and mast cells .
il-4 secreted by activated t cells is a pleiotropic cytokine affecting growth and differentiation of diverse cell types such as t cells , b cells , and mast cells .
B-protein_molecule O O B-cell_type I-cell_type I-cell_type O O B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O B-cell_type I-cell_type O B-cell_type I-cell_type O O B-cell_type I-cell_type O