AIM: To study the effects of molecular mass of dextran on drug release of prednisolone dextran conjugates in vitro and to screen colon specific conjugates.

• 目的:筛选具有结肠靶向释药特性的强的松龙葡聚糖连接物；探讨葡聚糖分子量对强的松龙葡聚糖连接物体外靶向释药的影响.