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. 2014 Dec 3;9(12):e114380. doi: 10.1371/journal.pone.0114380

Table 1. The identified elements related to the EDF-mazEF pathway that permitted the SOS response in the herein studied E. coli strains.

Strains The elements studied
EDF λ lysogen
MG1655 [−] [−]
BW25113 [−] [−]
MC4100relA +λ [+] [+]
AB1932λ [+] [+]

Brackets indicate the element that was missing [−] or present [+] that permitted the SOS response in each of these strains.