The fourth edition of the two-volume book on "Mucosal "Immunology" serves as the comprehensive reference work covering the basic science and clinical aspects of the entire field of mucosal immunology. This publication contains a collection of the most recent research data with exceptional color illustrations, interpretative discussions and novel perspectives which will provide researchers and clinicians with the most up-to-date and comprehensive information concerning novel findings, original theories, and mucosal diseases with current therapeutical approaches.