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Effects of VS:CV, VS:C, VS:CY hydrogels on localization of glycosaminoglycans (GAG), type I collagen, and type II collagen by encapsulated chondrocytes on day 21 of in vitro culture. Sections of chondrocyte-laden hydrogels were stained with (A–C) Alcian blue, or antibodies for (D–F) type I collagen (Col I), or (G–I) type II collagen. Bar = 50 μm.
