“But within 20 days of transfer, the monkey blastoids stopped developing and seemed to come apart, say Liu and colleagues, who published their results in the journal Cell Stem Cell.”
Researchers in Shanghai put eight to 10 stem-cell blastoids into each of eight monkeys. Three showed early signs of pregnancy, and all of it fell apart within 20 days. Of 484 blastoids developing at day seven, five made it to day 17. The headline says implanted. The data says a positive pregnancy test and a 1 percent survival rate.