Scheme of generating blastoids from TBLCs (IMAGE) Science China Press Caption To assess whether TBLCs possess the ability to form blastoids, 5, 10, 25, and 50 cells of mCMG-TBLCs were aggregated per microwell of the AggrewellTM 400 in the reported medium for generating EPS-blastoid (iBlastoid medium). After 5 days of culture, some of the microwells initiating with 5 and 10 cells turned out to be empty because of cell death. Nevertheless, most of the remaining cell clumps with different initiating cell numbers started to form a cavity. The cavities gradually grew bigger to form a blastocyst-like structure in another 2 days. Credit ©Science China Press Usage Restrictions Use 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.