Organoids
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Scientists grow human brain tissue in mice
Brain "organoids" made from stem cells are a promising way to study the brain, but the longest they've survived in a petri dish is just five weeks. Researchers from the Salk Institute recently implanted a bean-sized brain organoid into a mouse, and covered it with a transparent window. The material was able to get a blood supply from the mouse and survived for up to 233 days, displaying the same properties and growth as if it were in a newborn. It's a big advance for organoids and could help scientists study and treat mental illness and brain injuries.
