Figure 1.

Serum concentration of sCD163 in patients with systemic sclerosis (SSc) and healthy controls. Concentration of sCD163 in the sera of all SSc patients (SSc), SSc patients without digital ulcers (DU-), SSc patients with digital ulcers (DU+) and healthy controls. Closed circles represent values in individual subjects, bars represent the mean values of the groups, and horizontal lines the appropriate SDs. NS, not significant.

Kowal-Bielecka et al. Arthritis Research & Therapy 2013 15:R69   doi:10.1186/ar4246
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