Fig 5. Immunofluorescence and quantification of MMP-3 and MMP-13 in femoral knee cartilage exposed to high load.

A) Immunofluorescence staining for MMP-3 levels and quantification of pixel density per mm² in the articular cartilage of mice 10 days after exposure to normal activity (normal), moderate load (FEx) and high load (10 DAI). B) MMP-13 levels. Values represent mean ± SEM. Scale bars, 50 μm. Statistical significances: *p<0.05, **p<0.01 and ***p<0.001.