Organoids are mini organs grown in labs from stem cells, but which until now have lacked blood vessels. A US team has fixed that

Scientists at the University of North Texas in the United States report a breakthrough in building tiny, lab-grown replicas of human organs.

These replicas, called organoids, can mimic some functions and structures of real organs, but a key limitation in the past has been the lack of blood vessels.

The University of North Texas team, working with Stanford University in California, managed to grow mini hearts that have their own blood vessels.

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