Abstract

Yu Xiao Wei

Immunology deals with studies related to different aspects of the immune system like the structure, cells, response against antigens, function, and disorders, in all organisms; it is also an emerging branch of medical science. The immune system consists of chemicals process collection of cells, and mechanism that aim to protect foreign antigens from the body, such as microbes (organisms such as, parasites, bacteria, and fungi), cancer cells, viruses, and toxins, the immune system consists of two lines of defense; adaptive immunity and innate immunity.