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: Pathology
[{'content': 'Increased vascular permeability in acute inflammation is due to ? \nSelect and explain. \nA. Histamine, B. IL 2, C. TGF beta, D. FGF', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Histamine", 'role': 'assistant'}]