Let’s take a closer look at what could be going on with Tracy. Before we do, let's learn a bit about what happens in your body when you are exposed to a bacteria or a virus. The system in our body that is responsible for fighting off these bad guys is called the immune system. Visit the Kids Health Immune Guide to learn the basics about how your immune system responds to an attack by a foreign invader.
Let’s move to the BioVenture tab to learn more about bacteria and viruses.
Images © clipart.com
2006 with the exception of
the saddle © Microsoft
clipart 2006. |
Unless otherwise noted, © 2006 - 2008 FLVS |