重組人粒細胞巨噬細胞集落刺激因子（rhGM-CSF）作用于造血祖細胞，促進其增殖和分化，其重要作用是刺激粒、單核巨噬細胞成熟，促進成熟細胞向外周血釋放，并能促進巨噬細胞及噬酸性細胞的多種功能。

北京上?？蛻羰褂米C明與IL-4聯用活化DC細胞效果明顯。

GM-CSF is a cytokine that functions as a white blood cell growth factor. GM-CSF stimulates stem cells to produce granulocytes (neutrophils, eosinophils, and basophils) and monocytes. Monocytes exit the circulation and migrate into tissue, whereupon they mature into macrophages and dendritic cells. Thus, it is part of the immune/inflammatory cascade, by which activation of a small number of macrophages can rapidly lead to an increase in their numbers, a process crucial for fighting infection. The active form of the protein is found extracellularly as a homodimer