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COL2A1, COL10A1, aggrecan, and matrix metalloproteinase (MMP)-13 expression in normal and osteoarthritic chondrocytes. Quantitative COL2A1, COL10A1, aggrecan, and MMP-13 expression in normal and osteoarthritic chondrocytes. The results showed that COL2A1 and aggrecan were significantly upregulated in normal chondrocytes, whereas COL10A1 and MMP-13 were significantly upregulated in osteoarthritic chondrocytes. (Error bars, SEM; *P < 0.05).
