This may lead to growing replacement tissues within the patient and avoiding the need for organ transplants.
Here's how it works:
Human skin and blood cells are engineered into a type of embryonic-like stem cells called induced pluripotent stem (iPS) cells. They are bathed in growth factors to trigger their conversion to intestinal cells.
A small amounts of iPS cells are put into the kidney capsule of a mouse, where they are fed by the blood supply and then grow into a much larger ball of cells.