First artificial mouse embryos – complete with beating hearts and minds – created without sperm, eggs or uterus

For the first time, scientists created mouse embryos in the lab without using any eggs or sperm and watched them grow outside the womb. To achieve this feat, the researchers used only stem cells and a spinning apparatus filled with shiny glass vials.

The experiment is a “game changer,” Alfonso Martinez Arias, an evolutionary biologist at the Pompeu Fabra University in Barcelona who was not involved in the research, said. He told the Washington Post (Opens in a new tab).

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