Figure 6: Panel A: Significantly less S-GAG were extracted from the NP of discs undergoing annular injury compared to control discs. Panel B: There were no differences in NP S-GAG content between injured spinal levels Panel C: Significantly less S-GAGs were extracted from injured AF regions (AF1) compared to controls (p=0.0004), whilst there were no differences in the SGAG content of the contralateral non-injured AF (AF2) (Panel D).