In semi-solid agar culture systems IFN-a showed in-hibitory effects on day 7 and day 10 CFU-GM growthof normal and CML bone marrow , but little or no ef-fects on day 14 or later CFU-GM growth.

• 在半固体琼脂培养体系中，IFN－a能抑制正常对照和CML患者7天和10天CFU－GM，而不抑制14天及其后的CFU－GM。