(a)
(b)
(c)
Figure 2: Effect of SFN on bladder histological changes in BOO rats. Original magnification ×100. (a) HE staining in sham, BOO, and BOO+SFN bladders; (b) Masson trichrome staining in sham, BOO, and BOO+SFN bladders; (c) the percentage of collagen fibers in muscular layer in sham, BOO, and BOO+SFN bladders, , versus sham group, , versus BOO group.