Thirty-eight years after its introduction, affinity chromatography remains a key tool in the armory of separation techniques available to separation and interaction scientists. Expanded and updated from the first edition, this second edition volume aims to provide the beginner with the practical knowledge needed to develop affinity separations suitable for a variety of applications relevant to the post-genomic era. It contains state-of-the-art, brand new protocols, and provides step-by-step laboratory instructions for readily reproducible results.