Across
- 5. Programmed cell death of harmful or infected cells
- 6. Preparation that builds immunity without causing full infection
- 8. Which cytokine activates T helper cells?
- 10. Which lymphocyte makes antibodies?
- 11. Long lived immune cell formed after an infection
- 12. Protein on certain immune cells that displays antigens from outside
- 14. Signalling molecule
- 15. Which process eliminates lymphocytes that react to the body’s own tissues?
- 16. Which T cell type activates B cells and cytotoxic T cells?
- 17. Which immune branch involves cytotoxic T cells?
- 18. Which immune branch involves B cells and circulating antibodies?
Down
- 1. A disease-causing microbe, like a virus or bacterium
- 2. Immune reaction that occurs when a new antigen is encountered
- 3. Faster stronger reaction upon re-exposure to a known antigen
- 4. Foreign molecule that triggers an immune response
- 5. Which protein can bind a specific pathogen?
- 7. Which T cell kills infected cells directly?
- 9. Which cell type develops from activated B cells?
- 12. Protein on most cells that displays antigens from inside the cell
- 13. Which cytokine from T-helper cells drives B cell activation and growth?