对大分子前药的设计与合成，载体、活性药物和连接基的选择进行了论述。
The design and synthesis of macromolecular prodrugs, choice of polymer carrier, active drug and linker are introduced.
大分子前药是以大分子化合物为载体的一种新的药物传输体系。
Prodrug is a new drug delivery system based on polymer compounds.
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。
AIM To explore whether dexamethasone dextran ( 260 000 ) has the characteristics of site specific delivery in rat gastrointestinal tract.
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