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The results of the pH-based swelling ratio and total soluble matrix (%) of films. (A) The swelling ratios of 5-FU/ZnO-incorporated gelatin–chitosan was studied at various pH levels (4, 7.4, and 9). (B) The total soluble matrices of gelatin, chitosan, gelatin–chitosan, and 5-FU/ZnO-integrated gelatin–chitosan films.
