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': 'In cellular event of acute inflammation all are seen except - \nSelect and explain. \nA. Compliment involved in chemotaxis, B. ICAM - adhesion of leukocytes, C. PECAM - Activation of leukocytes, D. Selectins - Margination & rolling', 'role': 'user'}, {'content': 'Answer: C \nExplanation: . PECAM &; Activation of leukocytesExplanation :- PECAM 1 (platelet endothelial adhesion molecule) or CD31 &; involved in migration of leukocytes', 'role': 'assistant'}]