Across
- 3. medicines that kill bacteria
- 4. attach to antigens and destroy pathogens
- 5. memory white blood cells are present in the body and recognize and quickly destroy pathogens
- 6. disease causing organism
- 7. big outbreak of disease in a population
Down
- 1. injection containing a small amount of weakened or dead pathogens
- 2. cell in body that fights pathogens
- 4. on a pathogen that white blood cells recognizes