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Morphology of the isolated (a) fibroblasts and (b) keratinocytes. (c) The viability of fibroblasts encapsulated into collagen or GelMA analyzed by PrestoBlue assay after one day and three days of cultivation. Cell viability was expressed as percentages derived from the fluorescence intensity of each sample divided by the mean fluorescence intensity of the collagen group at 24 h *p < 0.05, ns: non-significant.
