Across
- 3. Living organisms or particles that cause disease.
- 7. Disease are not caused by pathogens and therefore cannot be spread from one person to another.
- 9. A type of pathogen that consists of a one-celled organism that lives almost everywhere on earth; can be helpful or harmful.
- 10. A type of pathogen that reproduces inside living cells; causes colds, flu, and hepatitis.
- 11. Disease Caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems.
Down
- 1. Infectious diseases that are able to be passed on by direct or indirect contact between individuals.
- 2. Dead or weakened pathogens given for immunity.
- 4. A white blood cell that eats foreign invaders.
- 5. Marks pathogens for destruction.
- 6. T Cells A white blood cell that activates the Killer T Cells and B Cells
- 8. T Cells A white blood cell that destroys infected cells.
- 11. System System of body organs, tissues, and cells that destroy pathogens.
- 12. Resistance to a particular disease.