Immunology

n. study of the immune system and the manner in which humans and animals fight off diseases (Biology)

Immunology is a broad branch of biomedical science that covers the study of all aspects of the immune system in all organisms. It deals with, among other things, the physiological functioning of the immune system in states of both health and disease; malfunctions of the immune system in immunological disorders (autoimmune diseases, hypersensitivities, immune deficiency, allograft rejection); the physical, chemical and physiological characteristics of the components of the immune system in vitro, in situ, and in vivo. Immunology has various applications in several disciplines of science, and as such is further divided.
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Immunology /im·mu·nol·o·gy/ the branch of biomedical science concerned with the response of the organism to antigenic challenge, the recognition of [more]Immunology - Community and Resources

Noun
1. the branch of medical science that studies the body's immune system
(hypernym) medicine, medical specialty
(hyponym) immunochemistry, chemoimmunology
(class) monovalent

The study of all aspects of the immune system including its structure and function, disorders of the immune system, blood banking, immunization and organ transplantation.