Artificially printed tissue may one day revolutionize how diseased organs are treated, fractured bones are fixed, and drugs are tested without human subjects. A great deal of progress has already been made toward this goal, but a major hurdle, that of integrating vasculature and bringing together different cell types into a functional whole, has significantly limited that progress. Now researchers at Harvard University report in journal Advanced Materials on a new method of 3D printing constructs made of three different cell types, including ones that line blood vessel walls.
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