In this reference British researchers have contributed articles covering the process of cell separation using a number of different methods, with explanations of the theoretical bases for these procedures. The chapters explain when a particular method would be best used, based on cell size, density, surface charge, hydrophobic surface properties, and antigen status. The methods described include sedimentation, centrifugal elutriation, partitioning in aqueous two-phase systems, flow cytometry, immuno methods (including magnetic, column, and panning techniques), and free flow electrophoresis.