immune system

2. the process of administering a vaccine containing a weakened or inactive form of a pathogen
7. engulfing and destroying foreign particles,
10. blood cell that play a crucial role in the body's immune system
11. a soft, spongy tissue found inside most bones responsible for producing blood cells white blood cells
13. abdominal organ involved in the production and removal of blood cells
14. trains and matures T-lymphocytes
16. acting as a physical barrier and an active immune organ by containing immune cells
17. type of white blood cell play a crucial role in the immune system
19. protection you develop when your body fights off an infection

1. A type of white blood cell that surrounds and kills microorganisms
2. an infectious microbe consisting of a segment of nucleic acid surrounded by a protein coat
3. proteins produced by the immune system
4. totally or partially resistant to a particular infectious disease
5. Filter lymph fluid, which carries white blood cells and other immune components
6. specialized cells that play a crucial role in protecting the body from infections
8. small proteins secreted by immune cells that play a crucial role in regulating immune responses
9. a type of white blood cell that play a crucial role in the adaptive immune system
12. network of cells, tissues, and organs that works to protect the body
15. immunity that is acquired through external interventions
18. vital role in defending the body against infections