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. 2018 Dec 5;13:8281–8296. doi: 10.2147/IJN.S173691

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© 2018 Shen et al. This work is published and licensed by Dove Medical Press Limited

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Plot of the fluorescence intensity ratio of I₃₃₈/I₃₃₃ from excitation spectra as a function of mPEG-PLA with a weight ratio of (A) 60:40 concentration, (B) 50:50 concentration, and (C) 40:60 concentration.

Abbreviations: mPEG, methoxy poly(ethylene glycol); PLA, poly(lactide).