72.txt 334 Bytes
In this study , we generated two S. Typhimurium aroA strains , genetically modified to express Stx2 AB , as orally delivered vectors for the control of HUS .
In this study , we generated two S. Typhimurium aroA strains , genetically modified to express a nontoxic Stx2 derivative , as orally delivered vectors for the control of HUS .