Figure 1From: Expression and functional properties of antibodies to tissue inhibitors of metalloproteinases (TIMPs) in rheumatoid arthritisAutoreactivity against TIMPs in blood and synovial fluid of patients with RA and in controls. Autoreactivity was measured as absorbance at 450 nm. White boxes, patients with RA, n = 89; coloured boxes, controls (blood n = 62, synovial fluid n = 21). The box plots represent the means and interquartile ranges in each group. The dashed line indicates the cut-off level for each type of TIMP equal to the mean +2 standard deviations of the controls. TIMP, tissue inhibitor of metalloproteinases.Back to article page