C. difficile grdA and C. difficile ldhA mutant strains

C. difficile R20291 was used to generate separate deletions in grdA (JNB06) and ldhA (JNB15)以艰难梭菌（C. difficile）R20291为宿主菌株，分别在grdA与ldhA基因位点构建独立的基因缺失突变，所得突变株分别命名为JNB06与JNB15。