ABSTRACT
The immune system is a biological structure within organism and it helps to protect the organisms against disease. Immune system can detect a wide range of agents like viruses, worms, spores, fungi, bacteria, and other foreign elements. The immune systems identify and destroy the foreign pathogen through different defense mechanisms [1]. If there will be any change in the immune system it causes abnormality in defense mechanism and it leads to disease like inflammatory, cancer or autoimmune disease [2, 3].
