Liver Tissue (IMAGE) American College of Surgeons Caption Immunofluorescence image of a human induced pluripotent stem cell (iPSC)-derived liver organoid developed in the Tissue Orb bioreactor. Credit Tammy T. Chang, MD PhD FACS Usage Restrictions Credit to Tammy T. Chang, MD PhD FACS 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.