For years, scientists have predicted that 3-D printing—which has been used it to make toys, homes, scientific tools and even a plastic bunny that contained a DNA code for its own replication—could one day be harnessed to print live, human body parts to mitigate a shortage of donor organs. So far, researchers also used 3-D printing in medicine and dentistry to create dental implants, prosthetics, and models for surgeons to practice on before they make cuts on a patient. But many researchers have moved beyond printing with plastics and metals—printing with cells that then form living human tissues.
No one has printed fully functional, transplantable human organs just yet, but scientists are getting closer, making pieces of tissue that can be used to test drugs and designing methods to overcome the challenges of recreating the body’s complex biology….
