Across
- 4. lack of oxygen;dark red
- 6. Protein that combines with 02
- 10. white blood cell that defends RBC
- 11. makes blood red/binding site of oxygen
- 12. formation of red blood cells
- 17. found in tissues
- 18. formation of all blood cells
- 19. contains enzymes that aid attack
- 20. hormone that increase RBC production
Down
- 1. formation of platelets]
- 2. first WBC to the site of infection
- 3. immunity (produces anti-bodies)
- 5. found in blood
- 7. red blood cell
- 8. decrease in the oxygen carrying by RBC
- 9. Fights off infection within the blood
- 13. Red blood cells live this long
- 14. formation of white blood cells
- 15. plenty of oxygen; bright red
- 16. responds to allergic response