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
Hemodialysis-associated with amyloid pattern - 
Select and explain. 
A. A A, B. Beta - 2- macroglobulin, C. ATTR, D. AL
B: Beta - 2- macroglobulin
Answer: B: Beta - 2- macroglobulin 
Explanation: Hemodialysis associated amyloidosis : -

Patients on long-term hemodialysis for renal failure develop amyloidosis owing to deposition of β3- microglobulin.
In patients with renal failure, β2 - microglobulin is present in high concentration, but it cannot be filtered through the dialysis membranes and is retained in circulation,
Hemodialysis-associated amyloid deposits in the synovium, joints, and tendon sheaths.