Figure 3From: Postnatal development of depth-dependent collagen density in ovine articular cartilageExample of FTIRμS spectra. Example of FTIRμS absorption (A) spectra. The vertical lines define the parts of the spectra that were used for the quantitative analysis, i.e. 700 cm-1 ≤ ν ¯ ≤ 1710 cm-1. With (a) pure component spectra of the internal standard NaN3 (black), collagen (1.35 g/ml, dark gray) and chondroitin sulphate (3.19 g/ml, light gray); and (b) sample spectra from a single FOV at d = 100 μm for 0 weeks (gray) and 72 weeks (black).Back to article page