Across
- 1. The body's ability to resist specific harmful pathogens
- 4. Body's largest organ, providing a physical and chemical barrier against infection
- 6. Type of white blood cell which works by engulfing and digesting pathogens
- 8. Process, by which the white blood cells migrate to an area affected by a pathogen, as part of the immune response. Signs and symptoms include redness, heat, pain and swelling
- 9. Organ which produces wax, a thick substance which traps and expels pathogens from the body
Down
- 2. The process by which an individual's immune system becomes resistant to specific infection, usually by vaccination
- 3. Dead cells and debris from phagocytosis
- 5. Type of white blood cell which attacks pathogens that get into the blood and surrounding tissues
- 7. Tiny hair-like projections which line the respiratory tract and constantly wave foreign particles and mucous upwards, away from the lungs to where they can be swallowed safely
- 10. Any substance, foreign to the body, which stimulates an immune response