Across
- 3. immunity: Immunity that occurs naturally
- 5. duct: largest lymphatic vessel
- 10. form of small leukocyte
- 11. vessel: network of thin tubes that carry lymph and white blood cells
Down
- 1. white blood cell in connective tissue
- 2. acquired immunity: immunization by the injection of antibodies
- 4. fluid: fluid that surrounds tissue cells
- 6. organ responsible for the production and removal of blood cells
- 7. colorless fluid containing white blood cells
- 8. produces T cells for the immune system
- 9. immunity: immunity that develops after exposure to a suitable agent