section_path: Research and development/Weizmann Institute of Science (Israel)
section_name: Weizmann Institute of Science (Israel)
paragraph_text: Weizmann Institute of Science (Israel)
  
  In 2021, the Weizmann Institute of Science in Israel built a mechanical uterus and grew mouse embryos outside the uterus for several days. This device was also used in 2022 to nurture mouse stem cells for over a week and grow synthetic embryos from stem cells.