disease key words

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