The Immune System

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Across
  1. 1. What is the name used to describe a duplicates of memory B cells or plasma cells?
  2. 3. What cells secrete antibodies that bind to antigens to make them easier targets for phagocytes?
  3. 4. What activates B cells, cytotoxic T cells and are engulfed by macrophages?
  4. 6. What engulfs antigens when the body is first exposed?
  5. 8. What is another name for antibodies that has many different classes?
  6. 9. What is the co-receptor called that helps T cells communicate with macrophages?
  7. 11. What are secreted by plasma cells and are involved in the humoral immune response by binding to antigens?
  8. 12. What cell phase are memory cells in when dormant?
  9. 13. How many antigen binding sites does an antibody have?
  10. 14. What type of T cell stimulates B cells and cytotoxic T cells?
  11. 15. What is the name of the slower, specific type of immune response?
  12. 16. What do Helper T cells stimulate in humoral immune responses?
Down
  1. 2. Also known as antigenic determinant, what is the part of the antigen that that is recognised by antibodies?
  2. 5. What contains granules in their cytoplasm that can release antimicrobial agents, enzymes and toxic chemicals?
  3. 7. How do antibodies inactivate pathogens by neutralisation, agglutination and precipitation of dissolved antigens?
  4. 10. What are a mix an antibodies that bind to multiple epitopes called?
  5. 13. What kinase is recruited by CD4 to amplify its signal?