Infection and Response

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