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??. 1.??PLGA2.PLGA??3.PLGA???4.????5.????6.PLGA???????7.????????8.????. ??PLGA. ???-???Poly(Lactide-co-Glycolide) (PLGA) )????????????????????????????,???????????????????,?????????????????,????????????? . PLGA??. 40???,?LA(???)?GA(???) ??????????PLA(???)?PGA(????),????????????????,????
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