Tissue engineers create artificial blood vessels on a 3D printer.
Tissue engineers are building a handful of new body parts, from intestines to tracheas — but progress on larger organs has been slow. This is mainly because tissues need nutrients to stay alive, and they need blood vessels to deliver those nutrients. It’s difficult to build those vascular networks, but now a team from Germany may have a solution: Print some capillaries with a 3-D printer.
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