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Gene expression profile of CP chondrocytes cultured in chitosan sponges. Real-time RT-PCR semiquantitative results are presented as fold change in mRNA levels of CP chondrocytes when compared to CD cells. Samples with CP and CD chondrocytes were both analyzed, and a fold change higher than 1 corresponds to a higher gene expression by CP chondrocytes. *Significantly different from CD chondrocytes at same time point (p < 0.05).
