Figure 1.

Mean serum levels of vasoendothelial growth factor (VEGF), metalloproteinase-3 (MMP-3), and bone-specific alkaline phosphatase (BALP) at baseline and after 1 and 2 years in a tumor necrosis factor-alpha blocker-naïve cohort of ankylosing spondylitis patients. ns, not significant.

Appel et al. Arthritis Research & Therapy 2008 10:R125   doi:10.1186/ar2537
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