Across
- 1. When monocytes move from the bloodstream into the body tissues
- 3. Cells involved in immune surveillance, the process of detecting and destroying foreign cells in the body
- 7. White blood cells
- 9. Proteins that act as antibodies
- 12. Key protein involved in blood clotting
- 13. Disease-causing microor-ganism
- 16. Red blood cells
- 19. Blood platelets
- 20. A protein manufactured by the immune system when the immune system detects an antigen
- 21. cells Attach themselves to antigens and kill them
- 22. Makes up a large portion of the proteins in plasma
Down
- 2. Secrete chemicals to attack disease-causing parasites
- 4. Helps to maintain the proper amount of water in the blood
- 5. Cells that destroy harmful pathogens
- 6. A protein that allows red blood cells to transport oxygen and carbon dioxide through the blood as the cells travel through the circulatory system
- 8. Cells Slow or stop the activity of B or T cells once a foreign invader has been con- trolled or destroyed
- 10. Bone marrow cells with very large nuclei
- 11. Immunity Is the type of immunity with which you were born
- 14. cells Aid B lymphocytes in recognizing antigens and stimulating antibody production
- 15. Plays an important role in blood clotting
- 17. Substance that is harmful
- 18. Large, single- nucleus phagocytes that ingest and dis- pose of dead or dying cells and tissues
- 20. active immunity Developed when the body’s immune system is exposed to and learns to defend against one type of pathogen