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Unit 5

How do we get better?

Most microbes don’t cause illness. In fact, the human body has ten bacterial cells for every human cell. So, how does the body maintain itself in a microbial world? In this unit, we’ll learn how the immune system marshals its resources to outwit bacteria, viral, and parasitic pathogens. We will then highlight processes that exceptional pathogens use to evade the immune response.

Lesson 1: Our body’s barriers — the innate immune system (pdf)

Lesson 2: Evolving pathogens — the adaptive immune system (pdf)

Lesson 3: Evolving pathogens — our body’s responses — B and T cells (pdf)

Lesson 4: Our body’s responses — putting it all together! (pdf)

Lesson 5: What makes a good vaccine? (pdf)

The Great Debate – Are vaccines worth the risk? — Recommended Resources

ID Final Project: Description & Resources

Do Online: Unit 5 Multimedia

Infectious Disease Blog: Unit 5 Further Reading