2012 PROSE Award, Clinical Medicine: Honorable Mention The vast majority of medically important pathogens infect their host across a body surface such as the skin, or across a mucosal tissue such as the respiratory tract or intestines, as these sites are the ones exposed to the external environment. By focusing on immunity at mucosal and body surfaces this book presents a fresh, new approach to the teaching of immunology. After an introduction to the basic structure of the immune system, the...