Across
- 1. Microorganisms that cause disease.
- 4. Engulfs and digests the pathogens.
- 7. Involves injecting dead or inactive pathogens.
- 9. Its basically blood without the blood cells.
- 10. Sugar.
- 13. What we need for respiration.
- 14. It closes up wounds.
- 16. Type of cell that transport oxygen.
Down
- 2. Carries blood under pressure.
- 3. Shape in which the red blood cells are.
- 5. Acts as chemical messenger.
- 6. Type of cell that is in the immune system.
- 8. Type of cell that remeber the pathogens.
- 11. Gives blood its colour and it contains iron.
- 12. Creates antibodies for our body.
- 15. Produced in liver from excess of amino acids.