Includes lecture in the form of an educational DVD on subject Immunology.Added lot of diagrams and flow charts to make learning interesting and easier. Several new and easy to grasp MNEMONICS have been given throughout the text.Some new topics like platelets and diabetes mellitus with expanding some of the old topics.New set of conceptual questions with detailed explanations added at the end of most of the chapters to enhance the reasoning skills and facilitate learning.Conceptual and useful information has been added in the form of shaded boxes throughout the chapter to emphasize the clinical importance of the topic being read.