Immune System Made Simple
The immune system is a natural protection system by a body; with the primary assignment of detecting bacteria’s and viruses from danger. It also protects the body against any foreign danger approaching it.
The immune system protects the body from harmful substances by recognizing and responding to antigens; these are substances are usually on the surface of cells, bacteria’s and viruses. The immune system tries to destroy these antigens.
While it responds to these perceived danger, the immune system does not fight the antigens that the body produces naturally as it has learn to see them as normal.
There are different types of immunity. The innate immunity which is the defense system everyone is born with. They are the barriers that keep harmful materials from getting into the body. They are seen as the first line of defense in immune response.
Following on from the first line defense immune system are then the acquired immune systems. They are developed in the back of exposure to specific antigens. Once expose to it, the acquired immunity ensures the body develops a defense system against the specific antigen.
Passive immunity is another ; they are due to antibodies that are produced in a body other than their own. They are in babies, as they are born with these because they are transferred through the placenta from their mothers. These are temporary, as they disappear between the ages of six to twelve months. They could also be introduced into the body through immunizations.