CBF:H2B-Venus expression during kidney development. Fluorescent stereo-widefield images of whole mount kidneys at stages E13.5 (A), E16.5 (C), P0 (E) and P21 (G) showing CBF:H2B-Venus expression. Laser confocal images of transverse sections through the kidney of stages E13.5 (B, B1), E16.5 (D, D1), P0 (F, F1) and P21 (H, H1) expressing CBF:H2B-Venus. Sections are stained with Hoechst to label nuclei. ag, adrenal gland; ct, collecting tubules; g, gonad; gl, glomerulus, k, kidney; mm, mesenchymal tissue of medullary region; mv, metanephric vesicle, p, podocytes. Note, strong expression in the retro-peritoneal lymph sac (rps).