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A team of researchers from the Mayo Clinic and University of Pittsburgh have been studying the cellular processes involved in juvenile dermatomyositis. The researchers found specialized immune system cells, called dendritic cells, inside the muscle tissue of children with juvenile dermatomyositis, which suggests these cells are involved in the disease process. The finding opens new possibilities for better treatments for the disease. Their research was presented at the American College of Rheumatology’s annual meeting in November 2005. Source: About.com.