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Lesson 5.3 – Evolving pathogens—our body’s responses—B and T cells

The last lesson explored the idea that each B and T cell randomly makes a single receptor that is specific to a unique ligand. This cell then divides (clonal expansion), making exact copies of itself to respond to the threat. This lesson describes how B and T cells respond to disarm and kill pathogens after they have expanded. This includes antibodies production by B cells, killer T cell function, and processes T helper cells use to orchestrate the immune response.

Teacher Prep

5.3 Classroom Materials

5.3 Alternative Approaches

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