Effects of ICI 182, 780 on the expression of AR in the rat efferent ductules. In the control rats (A, B, E, F), AR expression was found in the nuclei of the efferent ductules epithelial, peritubular (arrow) and some stromal cells (*). The AR staining in the proximal tubules was weaker than that on distal tubules and initial segment of the epididymis (EP). (c) Ciliated cells. Insert in A represents the negative control. After ICI treatment (C, D, G, H), the AR expression was apparently unchanged along the efferent ductules. Bar in A = 50 μm.