Figure 1

(A) Phase contrast image of a 7-day-old human urothelium explant outgrowth. (B) Human ureter outgrowth stained with pan anticytokeratin antibodies, FITC/PI staining at day 3. Images of normal porcine urothelial cells within the explant outgrowth (C), micronucleated cells (D), and apoptotic cell (E, F), all stained with acridine orange.