Billie Iverson, 86, of Cranston, R.I., recently underwent a transplant of intestinal microbes that likely saved her life. Ryan T. Conaty for NPR hide caption

toggle caption Ryan T. Conaty for NPR

Microbe Transplants Treat Some Diseases That Drugs Can't Fix

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Microbiologist Emma Allen-Vercoe invented the Robogut, a mechanical device that mimics conditions in the human colon. Courtesy of thestar.com hide caption

toggle caption Courtesy of thestar.com