Supplemental Figure S2.

Representative images of fibroblast growth factor receptor 2 (FGFR2) immunostaining in uninjured bladder urothelium. A: Immunofluorescence with primary antibodies (+Primary) against FGFR2 (red) demonstrates strong signal throughout uninjured (and untreated) urothelium, from basal cells (arrows) to polyploid superficial cells (arrowheads). B: Immunofluorescence with no primary antibodies (-Primary) reveals no signal in the urothelium. Blue indicates DAPI. Scale bar = 50 μm (A and B). L, lumen.