Vasopressin (IMAGE) Kumamoto University Caption <p>A: Vasopressin administered to renal tubules derived from iPS cells with the PKD1 homozygous mutation does not form cysts. (Scale bar: 200 µm) </p> <p>B: Vasopressin administered to collecting ducts derived from iPS cells with the PKD1 homozygous mutation forms cysts (arrows) at a low frequency. (Scale bar: 200 µm) </p> Credit Professor Ryuichi Nishinakamura Usage Restrictions This image may only be used in conjunction with the accompanying release, or stories written about the work described in the release with reference to the original work. 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.