Across
- 1. cells produced by thymus,actively participates in immune response
- 6. immunity Immunity that occurs naturally
- 7. neutralize pathogens
- 9. organ responsible for the production and removal of blood cells
- 10. immunity immunity that develops after exposure to a suitable agent
- 11. fluid fluid that surrounds tissue cells
- 13. form of small leukocyte
Down
- 1. two small masses of lymphoid tissue in the throat
- 2. duct largest lymphatic vessel
- 3. acquired immunity immunization by the injection of antibodies
- 4. stimulate an individual's immune system to develop adaptive immunity to a pathogen.
- 5. white blood cell in connective tissue
- 8. cells produces antibodies
- 12. produces T cells for the immune system
- 13. vessel network of thin tubes that carry lymph and white blood cells