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Effects of gelatin-Ph and HA-Ph content on the expression of stem cell marker genes, Nanog, Oct4, and Sox2. Cell-laden hydrogels were prepared by varying (a) gelatin-Ph content at 0.5% HA-Ph, and (b) HA-Ph content at 3.0% gelatin-Ph. Bars: S.D. (n = 3). The relative expressions were calculated with the cells obtained before enclosing hydrogels as the reference. * p < 0.05, ** p < 0.01.
