This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Biochemistry
[{'content': 'Protein implicated in Familial Amyloidosis is \nSelect and explain. \nA. Serum amyloid A, B. b2-microglobulin, C. Amyloid b peptide, D. Transthyretin', 'role': 'user'}, {'content': "Answer: D \nExplanation: A Classification of AmyloidosisTypeProtein ImplicatedPrimaryPrincipally light chains of immunoglobulinsSecondarySerum amyloid A (SAA)FamilialTransthyretin; also rarely apolipoprotein A-1,cystatin C, fibrinogen, gelsolin, lysozymeAlzheimer's diseaseAmyloid b peptideDialysis-relatedb2-microglobulinRef: Harper&;s Biochemistry; 30th edition; Chapter 52; Plasma Proteins & Immunoglobulins; Table 52-7", 'role': 'assistant'}]