Across
- 3. Use of a non-pathogenic form of a microorganism or its toxin which stimulates an immune response
- 5. The organ in the body where T cells mature
- 7. The process by which many antibodies bind to and group together several pathogens
- 9. Chemical messengers that carry communication between cells
- 10. System by which lymph is returned from the cells to the blood and by which white blood cells are produced in response to inflammation or presence of antigens
- 11. A foreign (non-self) substance that, when introduced into the blood or tissues, triggers or reacts with antibodies
Down
- 1. Large phagocyte cells that remove harmful microbes from the body
- 2. Type of specific immunity involving the action of B-cells
- 4. Most abundant type of white blood cell
- 6. A chemical which is released in the body during an allergic reaction as part of the innate immune response
- 8. A Y-shaped protein molecule made of 4 polypeptide chains held together by disulphide bridges