Across
- 3. A disease that is spread from one living organism to another or through the environment.
- 4. White blood cells that attack invading pathogens.
- 6. A reaction to tissue damage caused by injury or infection.
- 8. A yellowing of the skin and eyes. Cirrhosis - Scarring of the liver.
- 10. A network of cells, tissues, organs and chemicals that flights of pathogens.
- 12. The state of being protected against a particular disease.
- 15. that can trigger an immune response.
- 16. Substances that kill cells or interfere with their functions.
- 17. A global outbreak of an infectious disease.
Down
- 1. Communicable diseases whose occurrence in humans has increased within the past two decades or threatens to increase in the near future.
- 2. An organism that carries and transmits pathogens to humans or other animals. Respiratory Tract - The passageway that makes breathing possible.
- 5. A condition that occurs when pathogens in the body multiply and damage body cells.
- 7. white blood cell that coordinates and performs many functions of specific immunity. Antibody - A protein that acts against a specific antigen. Vaccine - A preparation of dead or weakened pathogens that are introduced into the body to stimulate an immune response.
- 9. A microorganism that infects the digestive system. Epidemic - A disease outbreak that affects many people in the same place and at the same time.
- 11. A piece of genetic material surrounded by a protein coat.
- 13. The lining of various body cavities, including the nose, ears, and mouth. Pneumonia - An infection of the lungs in which the air sacs fill with pus and other liquids.
- 14. Single celled microorganisms.