How the specific immune response down regulated?

Ans.  the specific immune system is help the body to fight against all type of germ like bacteria and different viruses and they have to fight against such a immune system to enter into the body. These all are the basic requirements of the body that include protection and safety of the body from much different and dangerous disease. This complete system work in given order so that all the bacteria cannot enter into the body and furthermore, if they try to enter then a strong defense system already activated in th body that protects the body from different disease. When the activation of bacteria is over and the immune system perform its task and accomplished it then the generation of antibodies going to stop and the white blood cells are start working at their regular pattern.