Health

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Across
  1. 4. - they fight pathogens that have entered the body.
  2. 6. - weak version of a pathogen introduced into an organism
  3. 8. - living organisms that cause disease in others.
  4. 9. - a virus that causes flu.
  5. 10. body's ability to resist disease
  6. 11. caused by HIV.
  7. 12. - immunity acquired when we take medicine during sickness.
Down
  1. 1. - an organism that is invaded by a pathogen
  2. 2. - babies get this kind of immunity through breast milk.
  3. 3. - well being
  4. 5. treatment for bacterial infections.
  5. 7. - physical barrier in air passages to prevent pathogens and duct from reaching the lungs.