| 20080233577 | METHOD FOR PRODUCING LIGANDS, LIGANDS AND TEST KIT - The invention relates to a method for producing ligands, in particular aptamers. With this method, a target substance is offered to a set of candidate ligands, and the unbonded ligands are separated out by a cross-flow filtration process. The retentate, which contains ligand-target substance complexes, then undergoes further continuous cross-flow filtration while chemical and/or physical parameters are being varied. After each variation of a parameter, those candidate ligands whose bond with the target substance was dissolved by the parameter variation are collected in separate fractions and separately multiplied. | 09-25-2008 |
