This is the thoroughly revised and updated edition featuring new chapters on microbial immunity (bacterial, viral, mycological and parasitological) and effector mechanism. All the previous chapters have been extensively rewritten to keep the readers abreast of the recent advances in the subject. Attempt has been made to include multitude of complex and diverse information so that the text is innovative, stimulatory and useful. Each chapter has been provided with required illustrations and tables. Also included are the multiple choice questions (MCQs) with answers to prepare the students for various competitive examinations. In the present era there are spectacular advances in science and technology, especially in the field of immunology which has undergone a period of explosive growth over the past 25 years. Immunology is deepening our understanding of the disease process and providing new diagnostic and therapeutic approaches such as monoclonal antibodies (both animal and Humanized) which serve as an important tool for highly specific detectors of pathogenic microorganisms, tissue damage, cancer and probe to detect differences in various antigens. Whats NEW Includes 24 chapters covering comprehensively all the contents of immunology All the chapters have been revised to keep reader abreast with recent advances Each Chapter has been substantiated with latest references in order to facilitate the postgraduate students and research scientists. Each chapter ends with the Multiple choice questions (MCQs) Major changes will be found in cellular basis of immune response and new chapter has been added on effector mechanism and microbial immunity Significant information on this fast growing area of immunology has been added in the antibody production by endogenous antigen, humanized monoclonal antibody and microbial immunity. The book is ¢ Intended primarily for the Allied Health Science, primarily for Students of Veterinary Sciences