Across
- 3. leads away from the left side of the heart
- 4. lacks nucleus, biconcave disk
- 7. protein on the surface of pathogen that body recognises as non self
- 8. carries all cells and dissolved substances
- 9. leads into right side of the heart
- 10. produces antibodies
- 11. produced by lymphocyte to neutralise toxins
- 12. piece in the middle betwean the right and left side of the heart
- 13. leads blood out of the heart
Down
- 1. have a lobed nucleus
- 2. pathogen that can't be reproduced that we put in vaccines
- 5. produces scabs
- 6. break down pathogens, found in phagocytes
- 8. becomes memory cell
- 9. leads blood into the heart