The 3D printer has won the hearts of manufacturers for its ability to create detailed products without the need for expensive and time-consuming prototyping. Everything from prosthetics to engines to football cleats have spun out of the technology. But it couldn’t create human organs, could it? Well, yes, it can.

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Scientists claim to have recently enhanced the performance and stability of 3D-printed organs, including a heart — a development that would excite the Tin Man of “The Wizard of Oz.” The real-life implications of organs created by 3D printing are vast and revolutionary. The printer could quickly produce organs to those in need of a transplant, and it could enhance the skills of surgeons by letting them practice on copied organs — innovations many would say are worth copying on a large scale.

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Connecting Printed Vessels With Cells To be clear, the organs aren’t entirely the products of additive […]

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