Lesson 20: Stress and Illness: Slide 9





Your Immune System
- Your immune system is a collection of biological processes that protects you against disease by identifying and killing or removing harmful agents
- It detects a wide variety of harmful agents including viruses, bacteria, parasites and tumor cells
- It distinguishes them from your own healthy cells and tissues
- Disorders in the immune system can result in disease
Notes:
http://en.wikipedia.org/wiki/Immune_system