This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins and Amino Acids, Subject name: Biochemistry
[{'content': 'Which of the following is a negative phase proteins: \nSelect and explain. \nA. Transthyretin, B. C-Reactive Protein, C. Ferritin, D. Ceruloplasmin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. TransthyretinACUTE PHASE PROTEINPositive acute phase proteinNegative acute phase protein*. Ceruloplasmin*. INF-1*. Ferritin*. Transthyretin (Prealbumin)*. C-Reactive Protein*. Albumin*. HSCRP(Highly Sensitive CRP)*. Transferrin*. Serum amyloid A *. Fibrinogen *. Plasminogen activator inhibitor (PAI)', 'role': 'assistant'}]