chapter 13 crossword

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Across
  1. 3. Introducing antigens to stimulate an immune response and develop protection.
  2. 5. A protein released by plasma cells that binds to specific antigens.
  3. 6. T Cells T cells that activate and coordinate other immune cells.
  4. 8. Another name for an antibody.
  5. 13. Cells Activated B cells that produce and release antibodies.
  6. 15. A receptor on T cells that recognizes antigen fragments presented by MHC.
  7. 16. Immunity The body's fast and general defense against pathogens.
Down
  1. 1. Immunity A specific immune defense that can remember pathogens.
  2. 2. Selection The process where activated lymphocytes produce copies of themselves.
  3. 4. T Cells T cells that directly destroy infected or abnormal cells.
  4. 7. Presentation The process of displaying antigen fragments using MHC molecules.
  5. 9. Cells Immune cells that help recognize a pathogen if it returns.
  6. 10. White blood cells that help protect the body against infections.
  7. 11. A Y-shaped receptor on B cells that recognizes antigens.
  8. 12. The small part of an antigen recognized by an immune receptor.
  9. 14. A substance that can trigger a response from B cells or T cells.