Close up of humanized kidney cells (IMAGE) Cell Press Caption This figure shows a close up of humanized kidney cells (red fluorescence) inside the embryo compared to a "wildtype" pig embryo. Credit Wang, Xie, Li, Li, and Zhang et al/Cell Stem Cell Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.