The sheep are a little awkward, but on each step forward, their hooves come down strong and assured.John Szivek sees each movement as an encouraging sign because it means his research and experimental treatment are working. Szivek is a professor of orthopedic surgery and a UA researcher who is trying to figure out how to regrow lost bone inside a human body. He received a $2 million grant from the U.S. Department of Defense to research a method to repair devastating bone injuries by using 3D-printed support structures in combination with stem cells.
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