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(A) Normalized S. aureus growth in supernatant after 24 h in contact with Gelatin NPs composite hydrogel loaded with NPs (Gel-PDA-PAR30) at different dilutions (n = 3 and error bars correspond to standard deviations) (***p < 0.001). (B) SEM images of Gelatin vs. Gel-PDA-PAR30 1:4 (NPs diluted 4 times in the hydrogel matrix) after 24 h of exposition with S. aureus.
