Granulocyte-macrophage colony-stimulating factor ( GM-CSF ) is a hemopoietic growth factor that is expressed in activated T cells , fibroblasts , macrophages , and endothelial cells .
granulocyte-macrophage colony-stimulating factor ( gm-csf ) is a hemopoietic growth factor that is expressed in activated t cells , fibroblasts , macrophages , and endothelial cells .
B-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O O O O O O O O O O O O O O O O O O O O O