This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammation & Repair, Subject name: Pathology
[{'content': 'Transmigration of WBC across the endothelium is called \nSelect and explain. \nA. Margination, B. Rolling, C. Pavementing, D. Diapedesis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Diapedesis(Ref: Robbins 9th/pg 76-77)Migration of the leukocytes through the endothelium, is called transmigration or diapedesis.It is mediated by PECAM-1', 'role': 'assistant'}]