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Guided Reading Activity – 24.2
1. What is the immune system?
2. How do physical barriers protect the body from pathogens? How do
chemical barriers protect the body from pathogens?
3. How is the inflammatory response involved in fighting pathogens?
4. Define the following terms:
a. Lymphocytes
b. Helper T cells
c. T cells
d. B cells
5. What is the difference between active and passive immunity?
6. List five behaviors that will help you maintain a healthy immune
system.
7. List the four types of vaccines mentioned in the lesson.
8. How do vaccines benefit people other than those who received
vaccination? Does this benefit exist for all communicable diseases?
9. In what way do toxoids prevent diseases?
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