This is a concise version of the full "Cellular and Molecular Immunology" by the same author. I read this book cover to cover as a MS-1. Now a MS-2 preparing for step1, I feel that, while the pictures are good and you can go through it very quickly (just over 200 pages),the book leaves out a lot of important information that are essential in understanding the mechanisms of immune responses and their application to specific diseases. After I finish a chapter, I often feel I just get fed hard, general facts without understanding the "WHY".
In comparison, the full book this book is based on, the "Cellular and Molecular Immunology," though much bigger (~600 pages), it offers much clearer explanation of how and why an immune response work a certain way. In the end I got a lot more out of the bigger book than this one. If I had a second chance, I'd spend more time and about 10 bucks more and just get the bigger book the first time around.