Doctors at Johns Hopkins have successfully grown an ear on a woman's arm. Sherrie Walters, 42, had an ear grown on her arm to replace one removed after developing bassal cell carcinoma in 2008. The illness meant that she had her ear, a piece of her skull and her ear canal removed.

She is now the first person ever to have their ear regrown using cartilage taken from her rib. The team of surgeons, led by Dr. Patrick Byrne, took rib cartilage to shape a new ear, according to Red Orbit. In an experimental procedure, it was placed under the skin and allowed to grow for four months before being transplanted into her head.