Across
- 3. What is the process of introducing a harmless form of a pathogen to stimulate immunity?
- 5. What name is given to a disease that cannot spread between individuals?
- 7. Which type of pathogen reproduces inside host cells, often causing them to burst?
- 9. In a clinical trial, what is the inactive substance given to some patients to test the effectiveness of a new drug?
- 10. What are the proteins produced by white blood cells that attach to specific antigens?
- 12. What is it called when bacteria mutate so that antibiotics no longer work against them?
- 14. What term describes an organism that carries and spreads a pathogen without being infected itself?
- 15. Which type of white blood cell action involves engulfing and digesting pathogens?
Down
- 1. What are single-celled organisms that can release toxins called?
- 2. What substances do white blood cells produce to neutralise toxins made by bacteria?
- 4. What are the unique molecules found on the surface of pathogens that trigger an immune response?
- 6. Which type of disease can spread from one organism to another?
- 8. What do we call a microorganism that causes disease?
- 11. What type of medicine kills or stops the growth of bacteria?
- 13. When you have been vaccinated against a disease, you become ________.