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Immunofluorescence staining of collagen type II (green) at Day 7, 14, and 28 both in chitosan and chitosan with hyaluronic acid scaffolds with hADSCs cultured in normal (NCHI and NCHI/HA) or chondrogenic medium (CCHI and CCHI/HA). The chitosan and chitosan with hyaluronic acid scaffolds fluoresced yellow, whereas living cell nuclei fluoresced blue. Magnification set at 10×.
