Figure 1

High expression of CD147, PAC-1, CD62P and CD40L on platelets from RA patients. PAC-1, CD62P, CD40L and CD147 expression as percentages of positive platelets in healthy controls (n = 10) and in patients with inactive RA (n = 10) and active RA (n = 30). (Means ± SDs of the means, ^**P <0.001 and ^***P <0.0001 vs. corresponding controls). RA: rheumatoid arthritis; SDs: standard deviations.