Figure 2From: Increased expression of matrix metalloproteinase-10, nerve growth factor and substance P in the painful degenerate intervertebral discImmunohistochemical localisation of matrix metalloproteinase-10 (MMP-10) in human intervertebral disc. MMP-10 immunopositivity in (a) postmortem (PM) normal, (b) PM degenerate and (c) surgical degenerate samples. An example of an IgG-negative control slide is shown (d). Scale bar = 25 μm.Back to article page