injection of endotoxin-free , mouse lf ( 2 mg/animal ) into mice at concentrations in the same order of magnitude as that found during bacterial infection , resulted in an increase in csf production by 12 hours and prior to the increase in bone marrow granulocyte-macrophage progenitor cells ( gm-cfc ) at 48 hours .
C0009392
csf
C0005953
bone marrow