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Western blot of HO-1 (a) and CTGF (b) in heart after treatment with riboflavin in diabetic rats. HO-1and CTGF were normalized with respect to actin in respective controls. Similar results were obtained in four independent sets of experiments. All the values represent mean±SEM (n=4). **P<0.01, significant difference to control rats; ##P<0.01, significant difference to diabetic rats. HO-1, heme oxygenase-1; CTGF, connective tissue growth factor.
