This undated image Courtesy of Carnegie Mellon University College of Engineering shows a functional heart valve which a team of US scientists have built out of collagen using a 3D bioprinter.
/ AFP / Carnegie Mellon University College of Engineering
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U.S. scientists announced early Friday they have successfully built functional heart parts out of collagen with a 3-D bioprinter, using a breakthrough technique they say could one day create entire organs. Their method, which was described in the journal Science, replicates the body's own complex biological scaffolds using its most abundant protein at the highest level of precision yet achieved.In April, an Israeli team unveiled a 3-D print of a heart with human tissue and vessels, but the organ did not have the ability to pump.There are 4,000 people in the United States awaiting a heart transplant and millions of others worldwide who need hearts but may be ineligible.
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