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Combinations of gene deletions for live attenuated shigella vaccine strains
Combinations of gene deletions for live attenuated shigella vaccine strains
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机译:减毒活志贺氏菌疫苗株基因缺失的组合
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摘要
Shigella vaccine strains whose primary attenuating feature is deletion of thevirG(icsA) gene and additional two or more deletions in setAB(shET1), senA(shET2),senB(shET2- 2), stxAB, and msbB2 genes. Thus, the vaccine strain will have threeor more deletions in the identified genes, will be safer, and will reduce or eliminatesymptoms of fever and diarrhea in humans. The following specific vaccine strainshave been constructed: WRSS3 (ΔsenA, ΔsenB, ΔvirG, ΔmsbB2),WRSf2G15 (ΔvirG, ΔsetAB, ΔsenA, ΔsenB, ΔmsbB2),and WRSd5 (ΔvirG, Δ stxAB, ΔsenA, ΔsenB, ΔmsbB2).
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