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The lubricin–mimetic diblock copolymer significantly decreases COF of articular cartilage compared with samples treated with PBS, binding block only, or lubrication block only (*P < 0.0001). Dashed line represents COF of samples tested in recombinant human lubricin solution at 50 μg/mL (12). One-way ANOVA was used to determine the statistical difference among the tribological results associated with the polymers in solution and the controls on articular cartilage.
