Israelis create world’s first 3D printed heart with blood vessels

That’s the tantalizing promise that Tel Aviv University researchers made this week with the announcement that they had successfully used a 3D bio-printer to create a heart complete with human tissue and blood vessels. While the university called it a “major medical breakthrough” that advances the possibilities for transplants, this 3D-printed heart still has some thumping limitations. First, it’s only the size of a rabbit’s heart. Journalists who attended the press event in Tel Aviv were shown a 3D print of a heart that looked more like a cherry, immersed in liquid. Second, the cells in the 3D heart can contract, but don’t yet have the ability to pump. Researchers must now figure out how to teach the printed hearts to behave like real ones. This is not the first heart to be 3D printed, but never before has it resulted in an organ “with cells or with blood vessels,” said Tal Dvir, who led the project at Tel Aviv University’s School of Molecular Cell Biology and Biotechnology. -- More....