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Why astronauts are printing organs in space

Andrew Morgan has seen some of the worst things that can happen to the human body. As a battlefield doctor with the US Army, he's treated young soldiers whose bodies had been torn and broken in explosions. "I've seen the loss of limbs and some devastating injuries as the result of blasts," he says. Witnessing the slow healing and recovery process first-hand got Morgan thinking – what if new tissue or even entire organs could be simply printed off to replace injured body parts? "The ability to transplant tissues made from the injured person's own cells would be hugely beneficial," he says.  That's why Morgan conducted a series of unusual experiments over several months last year – in outer space. You see, Morgan is also a Nasa astronaut. In April 2020 he returned from a 272-day stay on the International Space Station (ISS). While he orbited 248 miles (400km) above the Earth's surface, Morgan created living tissue, cell by cell, using a 3D printer and something called bio-ink. ........Read more

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