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': 'Hemodialysis associated amyloid is: \nSelect and explain. \nA. Beta 2 microglobulin, B. AA, C. AL, D. ATTR', 'role': 'user'}, {'content': "Answer: A \nExplanation: Patients on long term hemodialysis for renal failure develop amyloidosis due to deposition of b2 microglobulin. Ref: Robbin's Illustrated Pathology, 7th Edition, Pages 260-61; Complications of Dialysis By Norbe Lameire, Ravindra L. Mehta, Page 352", 'role': 'assistant'}]