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M2 macrophages promote tubular cell proliferation in kidneys after IRI. A, IHC staining for Ki67 and CDK at day 3 after IRI (Scale bar = 50 µm). B, Real‐time PCR analysis of Smad7, Cyclind1 and Cyclind2 mRNA level at day 3 after IRI. C, Western blot and quantification analysis of CyclinD1 and Smad7 protein level at day 3 after IRI. *P < .05, **P < .01 vs Sham. #P < .05, ##P < .01 vs IRI (n = 8)
