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Collagen II gene expression profiles of meniscal fibrochondrocytes. The x-axis refers to the passage number, and the y-axis to the gene expression abundance (in the exponent notation used, 'E-n' stands for '× 10-n'). Small letters denote significant differences with passage, using a one-way analysis of variance (top left). Capital letters denote significant differences between levels (passage, collagen I coating, aggrecan coating and no coating), using a two-way analysis of variance.
