Immune System Crossword

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