Immune System Crossword

4. An organ that stores and filters blood and makes white blood cells that protect you from infection
6. Cells that present antigens to T cells to initiate an immune response
8. a fluid that flows through the lymphatic system
9. A type of T cell that kills infected cells
10. A type of T cell that helps control the immune response
12. The body's general, non-specific type of immunity
15. A complex network of cells, tissues, organs, and the substances they make that help the body fight infections and other diseases.
18. Release histamine and other chemicals during allergic reactions
19. An organism that causes disease
20. Soft tissue in the center of bones that produce red and white blood cells

1. A type of adaptive immune cell that produces antibodies that neutralize pathogens
2. A type of T cell that assists other cells in the immune response
3. A type of innate immune cell that engulfs and digests pathogens and dead cells
5. Another term for white blood cells (WBC)
7. A type of innate immune cell that attacks a destroys virus-infected cells and tumor cells
11. The body's specific type of immunity that is built through exposure to pathogens
13. A gland behind the breastbone where lymphocytes mature
14. cells that combat multicellular parasites and have a role in allergic reactions
16. Y shaped proteins that fight microbes and toxins by recognizing antigens on the surface of microbes
17. Any molecule that causes an immune response