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': 'Immediate transient type of increase vascular permeability in acute inflammation - \nSelect and explain. \nA. Venules, B. Capillaries, C. Aerioles, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Venules Formation of endothelial gaps in venules is the most common mechanism of vascular lekage", 'role': 'assistant'}]