978-Immune System Part 1

Course # DL-978: An Overview of the Immune System, Part One: The Cells and Cell Surface Molecules

by Elizabeth Crabb Breen, M.T. (ASCP), Ph.D. - David Geffen - School of Medicine at UCLA

Approved for 3.0 CE
Level of Difficulty: Basic


The immune system is not a single discrete organ or collection of tissues, located in one or a few anatomic sites. In fact, it could be considered two collaborative systems: the innate immune system that reacts in a relatively non-specific manner, and the adaptive (or acquired) immune system, capable of incredibly specific recognition and response (1). These immune systems are composed of a variety of tissues and cells types, both fixed and mobile throughout the body, that work together, first to try to prevent the entry of pathogens and/or foreign material (known as antigens) into the body. Failing that, the immune systems spring into action to recognize and respond to the presence of antigens in order to eliminate or neutralize them, especially those associated with microbial pathogens.


After completing this course the participant will be able to:

  1. List physical and chemical barriers of the innate immune system
  2. Identify the white blood cells that are not antigen-specific
  3. Describe immunologic functions of the three antigen-specific lymphocyelymphocyte subsets
  4. List the differences in antigen presentation to CD4+ and CD8+ T cells
  5. Identify cells of the immune system utilizing CD nomenclature


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