Entrapment efficiency and drug loading of NPs-cp (n = 3).

The entrapment efficiency was calculated as the amount of cisplatin recovered from nanoparticles relative to the initial amount of cisplatin used for preparation. The loading efficiency of cisplatin was the amount of cisplatin recovered from nanoparticles relative to the amount of CMC and PLGA-mPEG.包封率（entrapment efficiency）的计算方式为：从纳米粒中回收的顺铂（cisplatin）量与制备初始投料的顺铂总量的比值。顺铂的负载效率（loading efficiency）则以从纳米粒中回收的顺铂量与羧甲基纤维素（CMC）和PLGA-mPEG的总投料量的比值进行计算。