Across
- 2. Nodes / Structures that swell during infections as white blood cells multiply
- 4. / Cell that engulfs large particles or pathogens
- 5. Immunity / Immunity gained by exposure to disease or vaccines
- 11. Proteins / Molecules that mark pathogens for destruction and assist the immune response
- 13. Memory / Immune system’s ability to remember past invaders and respond faster
- 15. / White blood cells that send signals to other immune cells
- 16. Immunity / Immune system that learns and remembers specific pathogens
- 18. / Y-shaped protein that binds specifically to antigens
- 19. Immunity / Immunity received from another source, like mother’s milk or antibody injections
- 21. / Overreaction of the immune system to a harmless substance
Down
- 1. / A weakened or missing immune response, which reduces the body’s defense
- 3. TCells / White blood cells that kill virus-infected cells
- 6. / Signaling proteins that help immune cells communicate and coordinate
- 7. / White blood cells that create antibodies
- 8. Immunity / Immune response involving antibody production by B cells
- 9. / Molecule that triggers an immune response
- 10. Immunity / General, non-specific immune defense present at birth
- 12. Immunity / Immune response involving direct attack on infected cells
- 14. / Large immune cell that engulfs invaders and activates adaptive immunity
- 16. Diseases / Conditions in which the immune system attacks the body’s own cells
- 17. / Substances that introduce antigens to stimulate immunity without causing illness
- 20. Cells / B cells that secrete antibodies during an immune response