2. Odd one out
Swine flu
common cold
herpes simplex
(cold sore)

3. Odd one out
Measles
Mumps
chickenpox

4. Odd one out
Tetanus
Tuberculosis (TB)
HIV
polio

5. Defence mechanisms

6. Defence White blood cells Pathogens
How do these words link?
Defence White blood cells Pathogens

8. How can I defend myself against pathogens?

9. What happens here?

10. How does this help?

11. What happens to microbes here?

12. What might happen here?

13. Why might we want to give drug addicts clean needles?

14. What is this?

15. Role of white blood cells How it protects you against disease
Ingesting microorganisms
Producing antibodies
Producing antitoxins

16. Why do we need all these different ways to protect us?
Engulfing attacks anything (first line of defence)
Antibodies kill pathogen
Antitoxins knock out the powerful toxins produced by bacteria