They could be immensely useful for research, revealing aspects of our developmental processes previously beyond the reach of experiments. Via QuantaMagazine
Meanwhile, Hanna’s team in Israel was growing mouse embryo models in a similar way, as they described in athat was published shortly before the paper from Zernicka-Goetz’s group. Hanna’s models too were made solely from embryonic stem cells, some of which had been genetically coaxed to become TSCs and XEN cells. “The entire synthetic organ-filled embryo, including extra-embryonic membranes, can all be generated by starting only with naive pluripotent stem cells,” Hanna said.
“These embryo models recapitulate natural embryogenesis very well,” Zernicka-Goetz said. The main differences may be consequences of the placenta forming improperly, since it cannot contact a uterus. Imperfect signals from the flawed placenta may impair the healthy growth of some embryonic tissue structures.
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