Across
- 3. stops most of the germs that
- 7. A harmful substance that causes the body to make anti bodies to fight the disease
- 9. many of the harmless mucous membrane
- 11. protects body against the body
- 13. produces T cells
- 14. Trap germ, bacteria and viruses
- 15. one of the major components of the immune system
- 16. Substances that cause an immune system response
Down
- 1. line and protect outside of the body
- 2. Spongy like tissue in the bone
- 4. acts as a safe house for good bacteria
- 5. nodes small structures that work as filters for harmful substances.
- 6. Some immunity against diseases
- 8. disease that affects immune system
- 10. substances that kill germs right from the start
- 12. Fighting invading germs in blood