This updated 3rd edition provides a readable and concise introduction to the workings of the human immune system, with emphasis on clinical relevance. The format makes learning easy with short, easy-to-read chapters, color tables, key point summaries, and review questions in every chapter. Youll get the latest coverage on regulatory T cells, biology of the Th17 subset of CD4+ T cells, and more. The full-color artwork, comprehensive glossary, and clinical cases are just some of the features that reinforce and test your understanding of how the immune system functions.