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Figure 1 | Arthritis Research & Therapy

Figure 1

From: Impact of interleukin-21 in the pathogenesis of primary Sjogren's syndrome: increased serum levels of interleukin-21 and its expression in the labial salivary glands

Figure 1

The serum IL-21 level. The serum IL-21 levels of patients with primary SS (n = 40), SLE (n = 38), or RA (n = 40) and healthy controls (n = 20) were measured by ELISA. The primary SS patients had significantly higher serum IL-21 levels than the healthy controls or the RA patients. Horizontal bars represent the median of all samples within a group. * P < 0.05, ** P < 0.01. IL: Interleukin; RA: rheumatoid arthritis; SLE: systemic lupus erythematosus; SS: Sjögren's syndrome.

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