This practical book provides scientists in all disciplines with clear descriptions of the plethora of immunochemical techniques available for detecting, isolating and characterising biological molecules. The revolution in molecular biology and biotechnology in the past decade has meant that immunochemistry has become an integral part of the experimental armoury of scientists from a variety of backgrounds. The heart of this technology is the remarkable specificity that antibodies display toward their epitopes. The specific recognition offered by immunological molecules has resulted in their uptake for a wide range of purposes. This book explains how to produce and purify antibodies and how to tag them for later visualisation.