Thus we review the recent advances on the new drug-delivery system of TCM, such as the sustained and controlled release delivery system, target delivery system.

为此我们对中药的缓释和控释系统、靶向给药系统等新型给药系统的研究进行了综述。

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Results Nanoparticle carrier system can protect the genes, have a high carrying efficiency and a well targeting property, it also can improve the bioavailability, sustained and controlled release.

结果纳米颗粒转运系统能够保护被转运的基因，有较高的转染效率，具有良好的靶向性，并且提高了药物的生物利用度，显示出一定的缓控释作用。

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And it introduces the principle and preparation method such as sustained or controlled release dosage forms, targeted drug delivery system etc.

介绍缓释制剂、控释制剂、靶向给药系统等的原理及制备方法。

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