Across
- 2. Learned defenses tailored to specific threats
- 7. Stimulating immunity through controlled exposure
- 8. spread from one host to another
- 11. Body's defense reaction to invaders
- 13. microorganism causing illness
- 15. Global epidemic affecting multiple regions
- 16. Parasite causing various diseases
- 17. Antibody-producing cell in the immune system
- 18. Successful invasion and replication of pathogens
- 19. Commander of the immune response
Down
- 1. Single-celled microorganisms with diverse characteristics
- 3. Body's defense after exposure, long-lasting
- 4. Recall of past encounters for faster defense
- 5. figure skater
- 6. Community-wide well-being focus
- 9. Persistent source of infectious agents
- 10. Natural, first-line defenses
- 12. Widespread outbreak - specific area
- 14. carrier of the disease
- 15. Short-term protection via external antibodies