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Cytotoxicity assay of the active multilayer films with and without cellulose nanocrystals (CNC) coatings. Cell viability was assessed by the resazurin assay (a) and cell counting kit- (CCK-8) assay (b) on Caco-2 cells after incubation for 24 and 48 h at 37 °C. Values reported as Mean ± SD (n = 8).
