immune system

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Across
  1. 2. totally or partially resistant to a particular infectious disease
  2. 4. engulfing and destroying foreign particles,
  3. 5. a type of white blood cell that play a crucial role in the adaptive immune system
  4. 6. abdominal organ involved in the production and removal of blood cells
  5. 10. blood cell that play a crucial role in the body's immune system
  6. 12. a soft, spongy tissue found inside most bones responsible for producing blood cells white blood cells
  7. 13. type of white blood cell play a crucial role in the immune system
  8. 16. small proteins secreted by immune cells that play a crucial role in regulating immune responses
  9. 17. network of cells, tissues, and organs that works to protect the body
  10. 19. acting as a physical barrier and an active immune organ by containing immune cells
  11. 20. immunity that is acquired through external interventions
Down
  1. 1. specialized cells that play a crucial role in protecting the body from infections
  2. 3. the process of administering a vaccine containing a weakened or inactive form of a pathogen
  3. 7. A type of white blood cell that surrounds and kills microorganisms
  4. 8. protection you develop when your body fights off an infection
  5. 9. trains and matures T-lymphocytes
  6. 11. Filter lymph fluid, which carries white blood cells and other immune components
  7. 14. proteins produced by the immune system
  8. 15. an infectious microbe consisting of a segment of nucleic acid surrounded by a protein coat
  9. 18. vital role in defending the body against infections