An electrophoresis-based assay system for detection of one or more target substances, i.e. an analyte tagged with fluorescent binding agents. The analyte is reacted with an excess amount of fluroescently tagged binding agent. The reaction mixture is subjected to electrophoresis and the migration of bound...http://www.google.com.au/patents/US5137609?utm_source=gb-gplus-sharePatent US5137609 - Differential separation assay
