The Immune System

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Across
  1. 3. A chemical that kills bacteria or slows their growth without harming cells.
  2. 5. The proteins produced by B cells.
  3. 6. Lymphocytes that produce proteins that help destroy pathogens.
  4. 7. The molecules that the immune system recognizes as either part of the body or coming from outside the body.
  5. 9. The process by which harmless antigens are purposefully introduced to a person's body to produce active immunity.
Down
  1. 1. The body's ability to destroy pathogens before they can cause disease.
  2. 2. An imbalance or misuse of insulin in the body.
  3. 4. A cell that identifies pathogens and distinguishes different pathogens from each other.
  4. 5. A disorder in which the immune system is overly sensitive to a foreign substance.
  5. 7. A disorder in which respiratory passages narrow significantly.
  6. 8. The body's first line of defense against pathogens.