Bar Plot from Scientific Research

Protein expression of MMP13 in chondrocytes. Values are presented as mean ± SD. The different letter symbols (a, ab, b, c, and d) indicate significant difference between each other (Fisher ' s LSD, P < 0.05 or P < 0.01) in descending order of data from a to z. Although the overlapped letters (a versus ab and ab versus b) were statistically different, their difference between each other was not significant. All experiments were repeated at least three times

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