Figure 1

ECM and gross images of development of the kidneys in the pig from D20 to D115. Image(A) shows a coronal view of the mesonephric kidneys in a D20 fetus. (B) shows the mesonephric kidneys and the developing metanephric kidneys at D26. Images (C and D) are coronal views showing the developing metanephric kidneys at D30 and D35 respectively. Gross image (E) shows the mesonephric and metanephric kidneys at D42 and (F) illustrates the kidneys with adrenal glands after the mesonephric kidneys have been removed. MES-Mesonephros, MET-Metanephrous, Ao-Aorta, Ad-adrenal gland.