Across
- 2. A microorganism that infects the digestive system
- 3. A specialized white blood cell that coordinates and performs many functions of specific immunity
- 5. A disease that is spread from one living organism to another or through the environment
- 7. An organism that carries and transmits pathogens to humans or other animals
- 8. a viral infection of the respiratory tract
- 10. A yellowing of the skin and eyes
- 14. Single-celled microorganisms
- 16. Symptoms include sore throat, fever, and enlarged lymph nodes in the neck.
- 17. An infection of the lungs in which the air sacs fill with pus and other liquids
- 18. Substances that kill cells or interfere with their functions
- 19. A piece of genetic material surrounded by a protein coat
- 20. A reaction to tissue damage caused by injury or infection
- 22. A condition that occurs when pathogens in the body multiply and damage body cells
Down
- 1. The passageway that makes breathing possible
- 4. A network of cells, tissues, organs, and chemicals that fights off pathogens
- 6. A global outbreak of an infectious disease
- 7. A preparation of dead or weakened pathogens that are introduced into the body to stimulate an immune response
- 9. a viral infection that causes inflammation of the liver
- 11. A protein that acts against a specific antigen
- 12. A disease outbreak that affects many people in the same place and at the same time
- 13. The lining of various body cavities, including the nose, ears, and mouth
- 15. Scarring of the liver
- 18. a bacterial disease that usually attacks the lungs
- 20. The state of being protected against a particular disease
- 21. Substances that can trigger an immune response