Kanamycin KinasePhosphotransferasesNeomycinGenetic VectorsPhosphoenolpyruvate Sugar Phosphotransferase SystemTransformation, GeneticHygromycin BPhosphotransferases (Alcohol Group Acceptor)PlasmidsRetroviridaeBase SequenceBlotting, SouthernMolecular Sequence DataKanamycinRestriction MappingTransfectionCloning, MolecularGenes, BacterialPhosphotransferases (Nitrogenous Group Acceptor)Plants, ToxicDrug Resistance, MicrobialFramycetinStreptomycesPhosphoenolpyruvatePlants, Genetically ModifiedEscherichia coliTobacco