Across
- 2. Release antibodies to bind to antigens
- 4. Neutralise the toxins from pathogens
- 7. Top two chambers of the heart
- 8. Ingest bacteria and contain a lobed nucleus
- 10. Unicellular organism that reproduce in your body and release toxins
- 14. Aids with blood clotting to forms clots and scabs
- 16. Prevents the backwards flow of blood
- 17. Carry oxygenated blood away from the heart
Down
- 1. Carry oxygenated blood towards the heart
- 3. Infectious pathogen surrounded by a protein coat
- 5. A substance which provides immunity against diseases
- 6. Liquid that carries all cells and dissolved substances
- 9. Long-lived immune cell which provides faster responses to foreign particles
- 11. Cause clumping of bacteria and neuralise
- 12. Smallest type of blood vessel
- 13. A red protein responsible for transporting oxygen in the blood
- 15. Bottom two chambers of the heart