Macrophage colony-stimulating factor (M-CSF), also known as CSF-1, is a hematopoietic growth factor that is involved in the proliferation, differentiation, and survival of monocytes, macrophages, and bone marrow progenitor cells. Mouse M-CSF Recombinant Protein is purified Macrophage colony-stimulating factor (M-CSF, CSF-1) produced in yeast.