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Lesson 12.3: Immunity to Infection Review

Know and Understand

List three barriers the integumentary system provides that protect against invasion by pathogens.
How do cilia help to prevent infection?
Explain how the inflammation response and phagocytes work together to fight infection.
What infectious disease prevention method relies on the immune system’s “memory” to be effective?

Analyze and Apply

Individuals who are fighting infections often have elevated white blood cell counts. Based on what you’ve learned in this lesson, why do you think this happens?

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