The kidney is one of the most complex organs. It contains a wide variety of epithelial and endothelial cells in the different regions; according to the latest findings, 16 to 26 cell types are assumed, of which 16 are epithelial and the rest are distributed among endothelial, immune and interstitial cells. In combination with our special media, such as the chemically defined Renal Epithelial Cell Growth Medium, all paths are open for genomics and proteomics.