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Published June 20, 2010, 12:00 AM

John Brekke

Dr. John Brekke works in his home lab June 3 in Duluth. The technology he developed 20 years ago is used in bone grafts, periodontal surgery and other applications. The technology he currently is developing allows for three-dimensional cell research and many other applications. Forum Communications Co.
Read the article: Minnesota medical inventor has dozens of patents