Sequence 21 from Patent WO2004050884. Sequence 21 from Patent EP1854891. Sequence 21 from patent US 7344886. Novel neomycin phosphotransferase genes and method for theselection of high-producing recombinant cells. NEW NEOMYCIN-PHOSPHOTRANSFERASE GENES AND METHODS FOR THE SELECTION OF RECOMBINANY CELLS PRODUCING HIGH LEVELS OF A DESIRED GENE PRODUCT. NEW NEOMYCIN-PHOSPHOTRANSFERASE GENES AND METHODS FOR THE SELECTION OF RECOMBINANY CELLS PRODUCING HIGH LEVELS OF A DESIRED GENE PRODUCT. Sequence 21 from patent US 7732181.