In the mentioned video, we are dealing with phagocytosis of bacteria by cells, oxidative burst, role of antigen and antigen presentation. This video is all about the cellular events of inflammation. Timeline 0:00 Introduction 0:48 Phagocytosis of foreign agent by macrophages and neutrophils 4:00 Formation of phagolysosomes 5:21 Function of lysosomes 7:11 Role of antigen in immunity 9:15 Oxidative burst 10:45 Neutrophil Extracellular Traps 12:50 Antigen presentation by Macrophages 13:30 MHC 18:25 Role of Lymph node 18:51 Recap