This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
When leukocytes are arranged along the endothelium of blood vessels it is called- 
Select and explain. 
A. Diapedesis, B. Adhesion, C. Margination, D. Chemotaxis
C: Margination
Answer: C: Margination 
Explanation: The process of leukocyte accumulation at periphery of vessels is called margination. Leukocyte-Endothelial Interactions This is called margination of leukocytes. Next the leukocytes begin rolling along the surface of the endothelium within the blood vessel and finally they line-up along the vascular endothelium mediated by selectins Pathology, Robbins. Page no.: 35