Instant Notes in Immunology, Fourth Edition, is the perfect text for science undergraduates and medical students looking for a concise introduction to the subject or a study guide to use before examinations. This edition has been thoroughly updated in all areas, especially in mucosal immunity, regulation of the immune response and cancer immunotherapy. Each topic begins with a summary of essential facts, which serves as an ideal revision checklist, followed by a description of the subject that focuses on core information along with clear, simple diagrams that are easy for students to understand and recall in essays and exams. Key Features: Beautifully illustrated to elucidate key concepts and mechanisms Topics listed under basic and clinical immunology New to this edition, the page design and many of the key diagrams and photos are now in full color Each subsection begins with a concise list of key concepts A free-to-access companion website hosts a wealth of resources, including interactive questions, as well as additional content to supplement that provided in the book.