The present invention relates a novel expression system which allows the study of experimental genes of interest on cellular events soon after transfection. The expression system includes a vector which encodes for a recombinant antibody binding unit (rAb). The expression system enables identification...http://www.google.com/patents/US6017754?utm_source=gb-gplus-sharePatent US6017754 - System for isolating and identifying eukaryotic cells transfected with genes and vectors, host cells and methods thereof