This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Actions of bradykinin include all of the following, except \nSelect and explain. \nA. Vasodilatation, B. Bronchodilatation, C. Increased vascular permeability, D. Pain', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ref robbins 9th ed pg90 Functions of bradykinin contraction of smooth muscle pain dilatation of the venules Reaction of Inflammation Principal mediators vasodilation histamine, prostaglandins Increased vascular permeability histamine and serotonin ; C3a,C5a ; leukotrienes C4,D4,E4 ; bradykinin pain prostaglandins and bradykinin', 'role': 'assistant'}]