Figure 5From: Matrix assisted laser desorption ionization mass spectrometry imaging identifies markers of ageing and osteoarthritic cartilage Fibronectin validation in normal and OA cartilage. A) A representative experiment of fibronectin immunohistochemistry in normal and OA samples is shown. B) Quantitation of differences in fibronectin staining between normal and OA cartilages (mean pixel intensity and 95% CI, n = 3; *P <0.05). OA, osteoarthritis; 95% CI, 95% confidence interval.Back to article page