Kidney Organoid (IMAGE) Keck School of Medicine of USC Caption Novel kidney organoid recapitulating the patterned distribution of principal cells (red) and intercalated cells (green) of an adult kidney's collecting duct system. Credit Zipeng Zeng/Li Lab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.