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
Acute phase reactants are all except ? 
Select and explain. 
A. C-reactive protein, B. Haptaglobulin, C. Endothelin, D. Fibrinogen
C: Endothelin
Answer: C: Endothelin 
Explanation: Ans. is 'c' i.e., Endothelin