The Immune System
When a virus invades your body, it attacks your cells, attempting to replicate and spread itself throughout your body. Take a few minutes to view the video segment Immune Cells in Action from The Secret of Life Teaching Modules: "Nothing to Sneeze At: Viruses" from eMediaVA℠. You will learn how the immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return. As you watch the video, consider the following questions:
- How is it possible for you to get the flu or a common cold more than once even though you have antibodies against it?
- How do you think vaccines work to protect your body?