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Degludec designer insulin molecule. Computer model showing the structure of degludec, a long-acting insulin formed by a group of two insulin hexamers (one shown) linked by the dark-blue hydrocarbon on the right side. Insulin plays an important role in blood sugar regulation. Insufficient production of insulin leads to an accumulation of glucose in the blood causing diabetes. (KEYSTONE/SCIENCE PHOTO LIBRARY/LAGUNA DESIGN/SCIENCE PHOTO LIBRARY)