Diseases and immunity

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Across
  1. 2. a white blood cell that engulfs pathogens
  2. 4. a protein that is produced by lymphocytes
  3. 6. a type of unicellular pathogen
  4. 7. a preventative measure that confers protection from infectious disease
  5. 9. the aim of vaccines
  6. 11. a method of transmission where an individual is infected via contact with infected bodily fluids
  7. 12. a relatively new type of vaccine, used first during the COVID-19 pandemic
Down
  1. 1. part of the second line of defence that makes the body hotter
  2. 2. a misfolded pathogenic protein
  3. 3. a compound that can be used to kill living microbes
  4. 5. the line of defence that stops pathogens that entering the body
  5. 8. a sickness caused by a pathogen
  6. 10. a pathogen that is considered not living