Figure 1.

Reactive urothelium (A and B) (hematoxylin eosin, original magnifications × 40 (A), × 200 (B)). Cytoplasmic immunoreactivity in reactive urothelium to CK20 in 1/3 urothelium including umbrella cells (original magnifications × 40 (C), × 200 (D), × 400 (E)).