the effects of lipid a , outer membrane lipoprotein , and murein were evaluated at several distinct stages : induction of colony-stimulating activity ( csa ) in the serum , increase in the number of committed splenic precursor cells ( cfu-c ) forming granulocyte-macrophage colonies in vitro , and triggering into the cell cycle of noncommitted hemopoietic stem cells ( cfu-s ) from bone marrow .
C0018183
colonies
C0005953
bone marrow