Across
- 4. invades helper T cells.
- 5. defense.
- 6. is a series of events that suppress infection and speed recovery.
- 8. and kill pathogens they encounter.
- 9. serve as a barrier to pathogens.
- 11. invaders for later destruction by macrophages.
- 12. local blood vessels to dilate, increasing blood flow to the area.
- 13. activate antibody production against that pathogen.
Down
- 1. the body’s inappropriate response to a normally harmless antigen.
- 2. to a particular disease
- 3. of cells and tissues found throughout the body.
- 7. a disease causing agent.
- 10. a white blood cell that engulfs and destroys pathogens.