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: Pathology
[{'content': 'Runt disease is associated with? \nSelect and explain. \nA. Acute rejection, B. Hyperacute rejection, C. Chronic rejection, D. Graft versus host disease', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Runt disease is Graft versus host disease.\nRunt disease occurs when immunologically competent donor cells are transplanted into immunologically\xa0crippled (immunocompromised) hosts and the transferred cells recognize host cells as alloantigens.', 'role': 'assistant'}]