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: Unknown
Mediator of acute inflammation not derived from cell is: 
Select and explain. 
A. Histamine, B. Leukotrienes, C. Kinins, D. Cytokines
C: Kinins
Answer: C: Kinins 
Explanation: (Refer: Robbins & Cotran’s – Pathologic Basis of Disease, SAE, 1st edition, Vol I–pg no: 82-85)
Chemical mediators of inflammation

Cellular mediators