3.07 Body's Line of Defense Against Infection

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First Line
Second Line
Third Line
Immune Response and Cells

First Line of Defense

Review the First Line of Defense below.

First Line of Defense fullscreen version | First Line of Defense text version

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Second Line of Defense

Review the Second Line of Defense below.

Second Line of Defense fullscreen version | Second Line of Defense text version

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Third Line of Defense

Review the Third Line of Defense below.

Third Line of Defense fullscreen version | Third Line of Defense text version

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Immune Response and Cells

View the HHMI Cells of the Immune System interactive slides with videos and complete the accompanying student worksheet in the Task #2 section. This “click and learn” activity is an overview of the immune system, concentrating on the roles played by B and T lymphocytes, and the antigen-presentation system.

Be sure to click on the videos embedded in some of the slides.