Across
- 4. T or B cells that remember previous invaders
- 6. Organ that filters blood and helps fight infection
- 8. Drug used to kill or inhibit bacteria
- 9. Chemical released during allergic reactions
- 11. Center within lymph nodes where B cells mature
- 14. Immune response against transplanted tissue
- 16. Surgical removal of the thymus
- 18. Body's response to injury or infection
- 21. An overreaction of the immune system to harmless substances
- 23. Gland where T cells mature
- 25. Substance used to stimulate the production of antibodies
- 27. T cell that moderates the immune response
- 28. T cell that kills infected or cancerous cells
- 29. The study of the immune system
- 31. Inflammation of the lymph nodes
- 35. White blood cell that attacks infected cells directly
- 36. White blood cell that produces antibodies
- 38. The marrow here produces immune cells
- 39. Mucosa-associated lymphoid tissue
- 41. Disease-causing microorganism
- 43. Lymphatic tissues located at the back of the throat
- 44. The body's ability to resist infection
- 45. Signaling protein released by immune cells
- 46. Fat-rich lymph from the digestive system
- 47. White blood cell involved in allergic reactions
- 49. Part of an antigen recognized by the immune system
- 50. Immune response tailored to specific pathogens
- 51. Normal protein that should not trigger immune response
- 53. Introduction of a vaccine to produce immunity
- 54. Protein that binds to a specific antigen
- 55. Group of proteins that help destroy pathogens
Down
- 1. T cell that activates B cells and cytotoxic T cells
- 2. Condition where the immune system attacks the body
- 3. Body's extreme response to infection
- 5. Small swellings where lymph is filtered and lymphocytes are found
- 7. Cell that engulfs and digests foreign invaders
- 9. Human leukocyte antigen important in immune recognition
- 10. Cell that displays antigens to T cells
- 12. Inflammation of lymph vessels
- 13. Natural killer cell that destroys infected or cancerous cells
- 15. Non-specific defense mechanism you're born with
- 17. Lymphoid tissue in the small intestine
- 19. Type of white blood cell that engulfs microbes
- 20. Relating to the network that carries lymph
- 22. Lymphatic capillary in the small intestine
- 24. Process by which specific lymphocytes proliferate
- 26. Swelling caused by excess fluid trapped in tissues
- 29. Antigen-antibody combination that can cause inflammation
- 30. Type of white blood cell that becomes a macrophage
- 32. Antibody-producing B cell
- 33. White blood cell involved in fighting parasites
- 34. The fluid part of blood that carries cells and proteins
- 35. Largest lymphatic duct in the body
- 37. Condition where the immune system is impaired
- 40. Protein that inhibits virus replication
- 42. A clear fluid that travels through the lymphatic system
- 48. Type of white blood cell involved in immune response
- 51. Surgical removal of the spleen
- 52. Substance that triggers an immune response
- 56. Large phagocytic cell that engulfs pathogens