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Analysis of chondrocyte viability in RGD/RDG-modified ECM hydrogels. (A) Live/dead viability cytotoxicity kit was used for viability test. Live cell was stained by Calcein AM and dead cell was stained by Ethd-1. Scale bar=200 μm. (B) Viability was measured by calculating the ratio of live cell and total cell number. Error bars represent the standard deviation on the mean for n=3. Color images available online at www.liebertpub.com/tea
