In vitro release study showed that polyanhydride erosion is the mechanism of drug controlled release.
体外释放研究表明，聚酸酐的溶蚀是控释的机理。
Objective To prepare aciclovir sustained-release pellets and investigate the drug release mechanism in vitro.
目的制备阿昔洛韦缓释微丸，并对其体外释药情况进行研究。
ObjectiveTo prepare potassium citrate sustained-release tablets and study its in-vitro release mechanism.
目的制备枸橼酸钾缓释片并考查其体外释放机制。
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