An affinity support is provided containing a high flux semipermeable hydrogel membrane surface-modified with an affinity ligand, such as a protein which may be an antibody or enzyme, or a cell receptor complement, useful for affinity separation of biological macromolecules, including insoluble...http://www.google.com/patents/US5766908?utm_source=gb-gplus-sharePatent US5766908 - High-flux semipermeable membrane containing immobilized affinity ligands
