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: Microbiology
[{'content': 'Cell mediated immunity is NOT responsible for: September 2004 \nSelect and explain. \nA. Ahus reaction, B. Contact dermatitis, C. Graft rejection, D. Tumor rejection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Ahus reaction Type III reactions (Ahus reaction etc.) are immune complex diseases/ Type III reactions', 'role': 'assistant'}]