Across
- 2. A non-living pathogen
- 6. Protein found on the surface of pathogens which antibodies can attach to
- 7. A type of immunity whereby an individual receives antibodies from an external source such as breast milk
- 8. Living pathogens
- 10. Protein which neutralises pathogens
- 11. A reaction of the immune system to a foreign substance which is usually harmless
- 12. An injection of a dead or weakened pathogen
Down
- 1. A cell which produces antibodies
- 3. The body's first line of defence against pathogens
- 4. A virus which mutates very quickly and damages an individual's immune system
- 5. A type of immunity which occurs due to a large percentage of a population
- 6. Medicine used to help kill bacteria
- 7. A cell which can ingest and absorb pathogens
- 9. An organism that causes disease