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. 2022 Sep 29;12(19):3423. doi: 10.3390/nano12193423

Figure 1.

Figure 1

Characteristics of differently charged, bare gelatin nanoparticles. (A) SEM images of lyophilized gelatin nanoparticles with different surface charges, (B) size distribution of gelatin nanoparticles in an aqueous solution and (C) the degradation of gelatin nanoparticles in the presence of collagenase type 1A at pH 7.4 (n = 3 for positive and negative particles, n = 2 for neutral particles). Scale bars represents 200 nm. Statistical significance is shown as * p < 0.05, ** p < 0.01, and **** p < 0.0001.