Figure 6.

Average force-displacement curves of push-out tests with standard error bars for untreated (n = 5) and enzyme-treated (n = 6) curves, respectively. Failure strength in the enzyme-treated group was significantly higher (+58%). The failure of the curve to return to zero can be explained by friction between pushed-out core and sample holder.

van de Breevaart Bravenboer et al. Arthritis Res Ther 2004 6:R469   doi:10.1186/ar1216
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