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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: J Orthop Res. 2013 Mar 11;31(7):1039–1045. doi: 10.1002/jor.22334

Figure 3.

Figure 3

IL-1 effects on matrix metalloproteinase (MMP) activity. (a) Total MMP activity was measured in the media of cartilage explants exposed to various concentrations of IL-1α (black bars) or IL-1β (gray bars). The data is expressed as fluorescence units (FU)/μg wet weight + standard error. There are significant effects of isoform with α > β and concentration with 0 < 0.01 < 0.1 < 1 = 10. Groups not showing the same letter are statistically different from each other. (b) Total MMP activity was measured in the media of meniscus explants exposed to various concentrations of IL-1α (black bars) or IL-1β (gray bars). There are significant effects of isoform with α > β and concentration with 0 < 0.01 < 0.1 < 1 < 10.