Human-animal chimeric embryo research (IMAGE) Cell Press Caption This is an illustration of the three progressive steps in human-animal chimeric embryo research shown to participants. Credit Adapted from Sawai et al., 2017 Usage Restrictions Credit Required. 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.