Immunology is a wide branch of medical science that deals with the characteristics, components, features and diseases related to immune system for all living organisms. It is the study of chemical, physical and physiological characteristics of cells and organs of the immune system. It provides information about various mechanisms, which are used by an organism’s body to fight against the foreign substances. This area of science has been divided into several sub components that deliver data specifically, one of which includes Clinical immunology. As the term infers, it is a part of immunological science that precisely provides information about the diseases and disorders of immune system. It also focuses on the health related issues where immune system plays a major role.