Immunology is a branch of biomedical science which deals with an organism’s response towards an invading environmental factor. This process involves a complex interplay of invading particle and defense system of the host organism along with successive cascading molecular mechanism to eliminate the invading agent. Clinical immunology is the branch of Immunology that deals with studies of diseases caused due to immune system disorders. Clinical Immunology falls into two categories Immunodeficiency and Autoimmunity. Immunodeficiency is a category in which adequate response is not provided by the immune system whereas in Autoimmunity the immune system attacks its own host body. Cellular immunology deals with activities of cells in experimental or clinical situations. It is the interactions among cells and molecules of the immune system that contribute to the recognition and elimination of pathogens. Clinical Immunology is the key a piece of Immunology that focuses on determination, test decision and interpretation of immunological tests, organization of Immunological illnesses and pharmaceutical frameworks. The development concentrates on checking of sicknesses and plans of theories and in addition meetings that are helpful to the clinicians to make novel medication strategies.