Aging

In a laboratory at Mayo Clinic, a machine that looks strikingly similar to a desktop printer is quietly reshaping the future of dermatology. Instead of ink, it dispenses living human cells. Instead of paper, it builds tissue — layer by layer — replicating one of the body's most complex organs: skin. For Saranya Wyles, M.D., Ph.D., a dermatologist and researcher at Mayo Clinic, the journey into 3D bioprinting began not with an ambitious plan to reinvent tissue engineering, but with a practical problem. Her team needed a better way to test new therapies.