Essentials of Clinical Immunology (ISBN 1405127619)

This book knows its stuff:
I bought this book wanting to study undergraduate immunology before I took the upcoming class. This book, however, is definitely not for beginners. It assumes you know certain terminology going into it. Regularly, you will stumble upon bold words like "low-affinity Fc(gamma)RIII receptors" with little explanation. There is a great deal of knowledge in this book. If you have your basic background, then I would recommend this book. During/After the class, I expect this book to be more helpful.