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Circulating chemokine levels in patients with chronic idiopathic urticaria (CIU). Serum samples from healthy controls (HC) and CIU patients were used to determine the presence of CXCL8, CXCL10, CCL2 and CXCL9 by cytometric bead array. Determination of CCL5 levels was performed by enzyme-linked immunosorbent assay (ELISA). Horizontal line represents the median. ***P ≤ 0·001; **P ≤ 0·01 compared with the HC group.
