Across
- 3. Proteins that recognize and bind to antigens.
- 7. Human body system which fights infections.
- 8. Soft tissues within the bones.
- 9. Injection of a weakened pathogen to produce immunity.
- 12. Line of defense which keeps pathogens out.
- 13. Elevated body temperature in response to infection.
- 14. Immunity produced by exposure to an antigen.
Down
- 1. Line of defense which fights pathogens that enter the body.
- 2. Your body's most important nonspecific defense.
- 4. Immunity against antigens and pathogens in the body fluids.
- 5. Immunity against abnormal cells or pathogens within cells.
- 6. Proteins that help cells fight viral infections.
- 10. Viruses, bacteria or other pathogens.
- 11. Short-term immunity caused when antibodies from other animals are injected into the body.