FIGURE 2. Three-dimensional representation of computational kidney model. (A) Exterior portion of ellipsoid representing kidney is seen with, at cutting plane, renal pelvis. (B) Cut through kidney reveals 5 medullary pyramids, renal pelvis at organ’s center, and surrounding renal cortex. (C) Cut through pelvis shows medullary pyramids within pelvis. One medullary pyramid is removed to reveal papillae at apex of each pyramid.

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