The Immune System

3. B cells perform this process of cell division when their surface receptors encounter antigens
6. Term for an antibody-mediated specific immune response
7. The proper term for active killer T cells that trigger programmed cell death in infected cells
10. The method of inactivating pathogens whereby antibodies block the binding sites of bacteria and viruses
11. A cell involved in innate immunity that contains granules to help fight pathogens
12. Foreign molecule present within the body that stimulates an immune response
15. The broad term for non-specific immune defences or responses that occur immediately in the presence of threats to the body
16. The type of linkages present in antibody protein chains
17. Antibodies that can recognise and bind to only one epitope (determinant) on an antigen

1. The "Y" shaped receptors present on B cells
2. Eosinophils, neutrophils and monocytes are all examples of what type of cell
4. Memory cells remain in this phase until stimulated by a secondary exposure to their relevant antigens
5. Method which provides active acquired immunity to a disease using attenuated pathogens
8. Broad term for the signalling molecules secreted by T cells to stimulate B cells
9. Phagocytic white blood cell known to engulf antigens
13. Another term for an antibody which describes globular proteins
14. Location in the body where T cell lymphocytes mature