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Figure 5: Effect of SFN on the Nrf2-ARE pathway in BOO rats. (a) Immunohistochemical staining of Nrf2 and HO-1 in the bladder of the three groups. Original magnification ×200. (b) The protein expression of total Nrf2 in the bladder of the three groups. (c) The protein expression of nuclear Nrf2 in the bladder of the three groups. (d) The protein expression of HO-1 in the bladder of the three groups. (e) The protein expression of NQO1 in the bladder of the three groups. versus sham group. versus BOO group.