This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute Inflammation - Overview and Morphologic Patterns, Subject name: Pathology
[{'content': 'Leukocyte migration through capillary wall is called? \nSelect and explain. \nA. Rolling, B. Diapedesis, C. Migration, D. Pavementing', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Diapedesis o Process of transmigration of leukocytes across the endothelium is called Diapedesis. The most important molecule responsible for diapedesis is called PECAM-1 (Platelet endothelial cell adhesion molecule) or CD-31.About other optionso When leukocytes principally neutrophills accumulate along the vascular endothelium. This is called margination.o The rows of leukocytes move (tumble) slowly along the endothelium a process called rollingo When the endothelium can be virtually lined by white cells called Pavementing.", 'role': 'assistant'}]