Interleukin-3 ( IL-3 ) is a cytokine that is expressed primarily in activated T cells .
interleukin-3 ( il-3 ) is a cytokine that is expressed primarily in activated t cells .
B-protein_molecule O B-protein_molecule O O O B-protein_family_or_group O O O O O B-cell_type I-cell_type I-cell_type O