in vivo diffusion chambers implanted in normal mice after 5 days of bone marrow cell culture contained precursor cells that in the presence of recombinant granulocyte-macrophage colony-stimulating factor ( rgm-csf ) , interleukin 3 ( il-3 ) , or colony-stimulating factor 1 ( csf-1 ) , alone or in combination , formed both small and large ( high proliferative potential colony-forming cells , hpp-cfc ) macrophage-containing colonies in vitro .
C0018956
precursor cells
C0007634
cells