Immune System

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Across
  1. 1. phagocyte, consumes and destroys pathogens
  2. 4. proteins that attach to antigens making pathogens useless
  3. 6. white blood cell that forms in bone barrow and matures in thymus
  4. 9. B cells that activate plasma cells when a similar antigen is observed
  5. 10. activated T cells that destroy infected cells
  6. 11. white blood cell that forms and matures in bone marrow
Down
  1. 2. makes antibodies that bind to infected cells
  2. 3. protein marker on the surface of cells and pathogens
  3. 5. T cells that recognize antigens and activate helper T cells to repond quickly
  4. 7. kind of white blood cell that can be divided into two types: B cells and T cells
  5. 8. binds to antigens on macrophages and activates other cells