This book is a latest attempt not only to include the diverse facets of immunology and immunotechnology but also to cater to the students of Biology, Zoology, Veterinary Science and Medicine in 21 st century. Salient features of the book are: 1. Compilation of latest advances in immunology and Immunotechnology in twenty eight chapters. 2. The language of the text is simple and comprehensive. 3. The current information embodied in the book has been duly supplemented by the feature of the future potential of immunological techniques. 4. The subject matter is fully illustrated.