Fig. 2From: Indoleamine 2, 3-dioxygenase (IDO) increases during renal fibrogenesis and its inhibition potentiates TGF-β 1-induced epithelial to mesenchymal transitionImmunohistochemistry for TGF-β 1 in CL kidney (a) and obstructed kidney (b). TGF-β 1 immunostaining was found predominantly in distal tubules (arrow), being more pronounced in obstructed kidneysBack to article page