<prompt> Leukocyte migration through capillary wall is called?RollingDiapedesisMigrationPavementing  <response>: 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. 