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(b)
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Figure 4: Expression of renal fibrosis indicators in the kidney. Semiquantitative analysis of renal TGF-β (a), FN (b), CTGF (c), and PAI-1 (d) mRNA expression normalized to GAPDH detected by real-time PCR. Data are presented as mean ± SD (). , control group versus CKD group; , CKD group versus CKD + MT1 and CKD + MT3 groups.