This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Leukocytic infiltraton in islet cells of pancrease is characterstically seen in some cases of - \nSelect and explain. \nA. Juvenile diabetes, B. Diabetic ketosis, C. Systemic mucoviscidosis, D. Haemorrhagic pancreatic necrosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Type 1 diabetes is a T cell-mediated autoimmune disease, characterized by lymphocytic infiltration of the pancreatic islets.', 'role': 'assistant'}]