Immune System

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Across
  1. 1. It is immunity against one’s own tissue.
  2. 4. where t cells mature
  3. 5. They are substances produced by a virus-infected cell.
  4. 6. A chemical that kills bacteria or slows their growth without harming cells.
  5. 7. What is the eating of pathogens or cellular debris?
  6. 8. clear watery fluid that surrounds cells
Down
  1. 2. fluid between tissue cells
  2. 3. white blood cells that filter out old red blood cells
  3. 6. A disorder in which respiratory passages narrow significantly.