Vector constructs for expression of two or more functional proteins or polypeptides under operative control of a single promoter and methods of making and using the same are described. The vectors comprise a self-processing cleavage site between each respective protein or polypeptide coding sequence....http://www.google.com/patents/US20050042721?utm_source=gb-gplus-sharePatent US20050042721 - Compositions and methods for enhanced expression of recombinant polypeptides from a single vector using a peptide cleavage site
