FIGURE 1

In situ hybridization for (hTERT) in transitional cell carcinoma of the upper urinary tract. The signal for hTERT was seen frequently within the cytoplasm of tumor cells. Its expression varied from weak to strong (A: weak; B: moderate; C: strong). In the normal urothelium of a few cases, its expression was barely detected (D). Scale bars: A, B, C, and D, 100 μm.