This is a video that provides an overview of the basic concepts of the immune system We'll cover the basics of innate immunity and the adaptive immune response. Also, this video goes over the general properties, cells and mechanisms of adaptive immune system. After discussing the role of B & T lymphocytes (and their variants), and antigen presenting mechanisms, this video will cover the basic concepts of lymphoid tissues - lymphoid follicles (germinal centers), parafollicular zones and their presentation in peripheral lymphoid organs. We'll use Star Wars, the Rotunda, you-the-students and facilitators to play out the concept of B and T lymphocyte education Enjoy!