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. Author manuscript; available in PMC: 2018 Feb 2.
Published in final edited form as: ACS Biomater Sci Eng. 2015 Apr 7;1(6):448–455. doi: 10.1021/acsbiomaterials.5b00080

Figure 4.

Figure 4

(a–i) TEM images of PPA25k-g-PEG/DNA micelles for PEG MW of 0.8, 2, and 5 kDa, at PEG grafting densities of 1%, 2%, and 4%. Scale bars 200 nm. (j) Aspect ratio of the micelles determined from TEM images. Plot shows mean and standard deviation (n > 100, **p < 0.01; Student3s t-test). *Aspect ratio of PPA-g-PEG5k-4%/DNA was not comparable with other data due to severe chain entanglement. (k) Aspect ratio of DNA in simulation. Here, each bar shows the mean and standard deviation of 225,000 independent samples.