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Phosphorylation of STAT5 in expanded Tregs in PBMCs from CKD patients by low-dose IL-2. (a) Three representative blots of Western blot analysis for phospho-STAT5 in PBMCs from CKD patients induced by IL-2 is depicted in the graph. (b) A representative blot of Western blot analysis for pimozide, a specific inhibitor of STAT5 activation; abolishment of IL-2-induced STAT5 phosphorylation is depicted in the graph.
