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Mouse Hearts and Brains Grown in a Lab!

Scientists from labs in Cambridge University and the California Institute of Technology in Pasadena claim to have successfully grown mice brains and hearts from embryo stem cells. “This has been the dream of our community for years and [a] major focus of our work for a decade, and finally, we’ve done it,” said senior study author Magdalena Zernicka-Goetz.


2022-08-25 20:16:33


Scientists coaxed mouse stem cells to grow into synthetic embryos that began developing hearts and brains, just like the real thing.

The lab-made embryos, crafted without any eggs or sperm and incubated in a device that resembles a fast-spinning Ferris wheel full of tiny glass vials, survived for 8.5 days. That’s nearly half the length of a typical mouse pregnancy. In that time, a yolk sac developed around the embryos to supply nutrition, and the embryos themselves developed digestive tracts; neural tubes, or the beginnings of the central nervous system; beating hearts; and brains with well-defined subsections, including the forebrain and midbrain, the scientists reported in a study published Thursday (Aug. 25) in the journal Nature (opens in new tab).

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More on Stem Cell Organ Growing:

Growing hope: New organs? Not yet, but stem cell research is getting closer – USC

First Organ Grown From Stem Cells Alone: Report – WebMD

Stem cells could regenerate organs – but only if the body won’t reject them – The Conversation

Growing Human Organs – Stanford University


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