The book provides a clear and comprehensive account of immunology. The subject matter has been organised with a view to facilitate the building up of concepts on the existing knowledge. The relevant details involving recent developments have been included in each chapter to provide a comprehensive cover with an easy flow of language. The book has been profusely illustrated with nearly 280 diagrams representing all important aspects of immunology for visual memory and understanding. It is also provided with flow diagrams and tables at the appropriate places for easy assimilation.