How the immune system works

Our immune system is essential for our survival.  It protects the body like a guardian from harmful influences from the environment. Without an immune system, our bodies would be open to attack from bacteria, viruses, parasites, and more. It is our immune system that keeps us healthy as we drift through a sea of pathogens.

This vast network of cells and tissues is constantly on the lookout for invaders, and once an enemy is spotted, a complex attack is mounted.

The immune system is spread throughout the body and involves many types of cells, organs, proteins, and tissues. It is incredibly complicated and utterly vital for our survival.

Watch the video and learn more about the work of human immune system and different types of immunity.