Across
- 1. WBCs that transform into macrophages
- 4. immunity where lymphocytes directly attack and destroy foreign cells or diseased host cells
- 5. local defensive response to tissue injury
- 7. cells that phagocytize tissue debris, antigen presenting cell
- 9. body's largest lymphatic organ
- 10. any molecule that triggers an immune response
- 12. tonsils found on each side of the root of the tongue
- 13. tonsil on the wall of the pharynx just behind the nasal cavity
- 15. when a lymph node becomes swollen and painful to the touch when it's under challenge from a foreign antigen
- 17. lymphocytes and macrophages congregated in dense masses
- 20. lymphocytes that differentiate into plasma cells
- 21. WBCs that phagocytize, digest, and kill bacteria
- 23. clear, colorless fluid, similar to blood plasma but low in protein
- 24. leukocytes that crawl through the endothelial cells
- 25. secreted when infected leukocytes are infected with a virus
- 26. a vaccine is a type of artificial ____________ immunity
Down
- 1. leukocyte adhesion to the vessel wall
- 2. lymphatic tissue where lymphocytes are scattered rather then densely clustered
- 3. when an activated T cell undergoes repeated mitosis
- 6. cells that attack and destroy bacteria
- 8. dead cells, tissue debris, and tissue fluid that form a pool of yellowish fluid
- 11. process in which antibodies link antigen molecules together
- 14. immunity where antibodies tag a pathogen for destruction
- 16. lymphatic nodules found at the distal portion of the small intestine
- 18. excessive, harmful immune reaction to antigens that most people tolerate
- 19. lymphocytes that mature in the thymus
- 22. class of antibodies that crosses the placenta