Visualization of the zebrafish kidney in an unfixed sample. Following removal of organs in the body cavity, the kidney appears as a single, flattened organ that is adherent to the dorsal body wall via connective tissues (A), and has been schematized (B) to show its anatomical shape.

Whole mount in situ hybridizations performed on the whole adult kidney organ. (A) cadherin17 transcripts are detected in the tubule of adult kidney nephrons, enlarged in (A’). (B) mafba transcripts are localized proximal nephron cell types in the adult kidney (compare to entire tubule in panel A). (B’) An enlarged view of mafba expression reveals that transcripts are specifically localized to the podocyte (P) cells of the blood filter (glomerulus) and proximal convoluted tubule (PCT).