The authors regret that inadvertent errors were made during the assembly of Figure 5. A TEM image that was obtained at pH 7.2 was erroneously incorporated in the figure; it should be the TEM image taken at pH 7.0, as we only talked about the characteristics of TMC/γ-PGA nanoparticles at pH 7.0 throughout the paper. Additionally, the representative TEM image at pH 6.0 was mistakenly taken. A correct TEM image that was obtained under the same conditions is now used. These corrections do not affect the interpretation of the data or the conclusion of the study.