Diapedesis is -
Ans. is 'b' i.e., Immigration of the leucocytes through the vessel wall to the site of inflammationo Diapedesis is the process of transmigration of leukocytes across the endothelium. The most impoant molecule responsible for diapedesis is called PECAM-1 (Platelet endothelial cell adhesion molecule) or CD-31.
Immigration of leucocytes through the basement membrane
Immigration of the leucocytes through the vessel wall to the site of inflammation
Aggregation of platelets at the site of bleeding
Auto digestion of the cells.