I am very glad to present this book of Instant Notes On Immunology , written according to revised syllabus of B.Sc, M.Sc(Biotechnology, Microbiology), B.Pharm, M.Pharm, M.Sc Agriculture and Veterinary in all Indian Universities. This book is also useful for the medical students.
I extend my good wishes to the students and teachers of Biotechnology and Microbiology, sincerely hope that Instant Notes On Immunology will receive a warm welcome from them.
I welcome comments by readers of Instant Notes On Immunology for way to improve the book and to increase its value. Such suggestions will be seriously considered in the preparation of subsequent editions.
I am very grateful to Dr. P. Chakarborty, Ex – Professor and Head, Department of Microbiology Medical College, Kolkata, India for useful suggestions and help made by him time to time.
Finally, I would like to thanks my wife Arpita Pattanayak(De), and my sweet daughter Anindita De for continuous encouragement for completion of this book.

Somnath De