Why do bodies sometimes attack themselves?
When an immune system mistakes its body's own tissues for foreign tissues, the result is an autoimmune disease. In this week's edtion of "Please Explain" we'll try to understand autoimmune diseases like multiple sclerosis and rheumatiod arthritis. We're joined by Dr. Elizabeth Mayer, physician in the Departments of Internal Medicine and Rheumatology at Columbia University Medical Center and New York Presbyterian Hospital, and Dr. Robert Winchester, Professor of Medicine, Pediatrics and Pathology at Columbia University Medical Center.
Music: Sonatine Soundtrack, Tracks 6 and 1
Music: Sonatine Soundtrack, Tracks 6 and 1

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