Soldiers are surviving wounds that would have been fatal before recent advances in battlefield trauma care, burn treatments and reconstruction. Subsequent reconstructive surgeries open new possibilities for infection and disfiguring scars, but research that Robert G. Hale, director of craniomaxillofacial research at the U.S. Army Institute of Surgical Research in San Antonio, and others are doing in regenerative medicine might someday allow patients' own tissue to regrow. Researchers are developing ways to regenerate skin, muscle, bone, blood vessels and nerves, and clinical trials begin soon on spray-on skin made from a patient's own stem cells.

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