Cells of the Immune System
This tutorial provides an overview of the immune system, concentrating on the roles played by B and T lymphocytes, and on the antigen-presentation system.
All animals possess a nonspecific defense system called the innate immune system, which includes macrophages in mammals. Vertebrates have an additional powerful immune response called adaptive immunity. This Click & Learn describes key elements of the adaptive immune system, including B cells and antibody molecules, helper T cells and cytotoxic T cells, and antigen presentation.
The accompanying worksheet guides students’ exploration.
Student Learning Targets
Describe the roles different immune cells play in defending the human body from infection.
adaptive immunity, antibody, antigen, antigen-presenting cell (APC), cytokine, humoral immunity, innate immunity, major histocompatibility complex (MHC), pathogen, white blood cell
1.C.3, 2.D.4, 3.D.2; SP6