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Figure 1


Fig. 1. The renal collecting system and ureter derive from the ureteric bud. (A) Schematic of mature urinary tract with arrowhead marking the junction between the kidney and conduit system. (B) The proximal ureteric bud (UB) gives rise to the collecting tubules, whereas the distal UB gives rise to the ureters. (C,D) Two models describing the process of UB sub-division into the ureters and renal collecting system. Cts, collecting tubules; np, nephron progenitor; m, periureteral mesenchyme.





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