Immune system

Inside our bodies, we have cells that protect us from being sick. The first cell is the B-Cell. The B-Cells make specific immunoglobulins which help keep us from getting sick. Their job is to kill fungi, bacteria and viruses. The three main immunoglobulins are: IgM, IgG and IgA. The IgMs help first by protecting our blood. IgGs travel in our blood to get to the germs. IgAs protect places where we have mucus, saliva and tears such as our mouth, lungs, intestines and nose. The nice thing about the immunoglobulins is they sometimes help each other out and attack the germs.

The second type of cell is the T-cell. The T-cells are located in our blood and other parts of our body. There are three types of T-cells: Killer T-cells, Helper T-cells and Suppressor T-cells. Killer T-cells kill infected cells. Helper T-cells tells the B-Cell to make more immunoglobulins and tell the Killer T-cells to kill germs. The Suppressor T-cell tells the B-Cells when to stop making the immunoglobulins.

The third type of cell is the Phagocyte. The phagocytes job is to eat germs and to call for other phagocytes to help.

The last cell is the Complement. The complement has 18 different parts. They all work together to protect our body from infection. The complement system works with the immunoglobulins and the phagocytes to kill the germs faster.