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Hematoxylin and eosin (H&E) staining of the urinary bladder tissue in the rats of the Con group and the BOO group. A significant increase in the smooth muscle content and the submucosal tissues along with relative epithelial thinning were noted in the BOO group compared with the control group. The horizontal scale bar at the bottom of each figure indicates the magnification power. Con: control, BOO: bladder outlet obstruction.
