Supplemental Figure S4.

Representative images of terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) staining in PBS- and keratinocyte growth factor (KGF)–pretreated bladders 3 days after cyclophosphamide injection. A and B: TUNEL staining (green) reveals few apoptotic cells in PBS-pretreated urothelium (arrowhead) and none in KGF-pretreated urothelium (B) 3 days after cyclophosphamide administration. Blue indicates DAPI. Dotted lines indicate demarcation between urothelial layer and underlying lamina propria. Scale bar = 50 μm (A and B). L, lumen.