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Chondrocyte survival of each gradient position based on DNA (ng) for days 2, 5, and 10 (A) and phenotype maintenance using CD14/CD90 ratios for days 2, 5, and 10 (B). 10 days of culture. *P-value < 0.05 relative to the 2.4 mM RGD concentration (10 mm gradient position). **P-value < 0.05 relative to the 2 day value. ***P-value < 0.05 relative to the 4.8 mM RGD concentration (25 mm gradient position).
