Researchers at Sweden’s Linköping University just published a method where they literally inject a gel full of living cells that can be printed into skin. It’s basically a mix of fibroblasts on gelatin beads and hyaluronic acid that flows through a syringe then solidifies on a wound, letting the body build a real dermis instead of scar tissue. In mice it seems to integrate well and even grows its own blood vessels. The whole idea of 3D printing skin or squeezing it out of a tube like toothpaste is both weird and incredibly promising for burn victims.