After singly stimulating MsC in vitro by IL 6, IL 1 and PDGF, the OD value an LI are both higher than that in 2% FCS.

• IL- 6组、IL- 1组和 PDGF组 12 h及 2 4h的光密度 (OD值 )与标记指数 (L I)均比 2%25 FCS组高 ;