Learn the basics of the immune system with The Amoeba Sisters! This video discusses the three lines of defense and also compares the cell-mediated response to the humoral response.

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Factual references:

Clark, M.A., Douglas, M., & Choi, J. (2018). Biology 2nd. Houston, TX: Biology Stax. https://openstax.org/details/books/biology-2e

Reece, JB, & Campbell, NA (2011). Campbell Biology. Boston: Benjamin Cummings/Pearson.

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Suggested further reading:

Discover many other types of white blood cells here! https://openstax.org/books/biology-2e/pages/42-1-innate-immune-response

Learn more about antibody classes? https://openstax.org/books/biology-2e/pages/42-3-antibodies

More details on the cellular and humoral response? https://openstax.org/books/biology-2e/pages/42-2-adaptive-immune-response
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