AIM To explore whether dexamethasone dextran ( 260 000 ) has the characteristics of site specific delivery in rat gastrointestinal tract.
目的探讨以葡聚糖（平均分子量2 6万）为载体的地塞米松前体药在大鼠胃肠道内的转释特性。
CONCLUSION Both multiple and single coated drop pills had the colon-specific delivery characteristics, but multiple coated drop pills was much better.
结论多层包衣滴丸和单层包衣滴丸均具有结肠定位释药性能，但前者定位性能明显优于后者。
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Customer should be responsible for the shipping fee when they require specific delivery method. Customer has to email or phone to our customer service team for arrangement.
若客人指定特定的递送方法，运费会由客人承担，并需以电子邮件或致电通知我们的顾客服务部为您处理。
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