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Cells of the Immune System

By HHMI BioInteractive

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.

Listed in Teaching Materials | resource by group HHMI BioInteractive

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Version 1.0 - published on 01 Jul 2019 doi:10.25334/VF0B-CE21 - cite this

Licensed under CC Attribution-NonCommercial-NoDerivatives 4.0 International according to these terms



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.


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HHMI BioInteractive

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