Figure 1.

Box-whisker plots showing concentrations in synovial fluid for rheumatoid arthritis and healthy controls. (a) IL-6; (b) bombesin/gastrin-releasing peptide; (c) substance P. Boxes show the 25th and 75th percentiles; horizontal lines in boxes show the medians; whiskers show the 10th and 90th percentiles. *P < 0.05.

Grimsholm et al. Arthritis Research & Therapy 2005 7:R416-R426   doi:10.1186/ar1503
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