Imagine being able to print a kidney, or a brand new beating heart. Perhaps the first step will be an implanted tissue patch that would augment or repair a damaged organ. Clearly the holy grail would be to engineer vital organs, such as the kidney, the heart, the liver. To do so for those three organs would be of tremendous value. How close would you say we are to printing an organ? It’s not enough to just print liver cells or cardiac cells or kidney cells. These cells have to function, they have to mimic the high densities of the living tissue.

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