Human stem cell-based embryo model (IMAGE) University of Cambridge Caption These models can be created in the lab and mimic aspects of early human embryo development, which raises various ethical considerations. The new Code of Practice proposes clear research guidance and oversight processes. Credit Irene Zorzan and Teresa Rayon, Babraham Institute Usage Restrictions With credit License Original 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.