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Non-specific immunity Label the areas of the body that have barriers to pathogens. 1. What is the function of the immune system? Three Lines Of Defense Non-specific immunity: all invaders treated the same way Specific immunity: a specialised response 2. What does “non-specific” immunity mean? 3. Why do cells carry markers on their outside? What does the immune system aim to do with these markers? 4. Fill in the following table outlining the methods that the second line of nonspecific immunity works: What are How do they work? Diagram they? Phagocytes Complement proteins Interferon Cytokines Inflammation Blood clotting 5. Write down three mechanical and three chemical defenses that plants have against disease.
