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Effect of arcA and arcB mutations on conjugal transfer of pSLT in aerobiosis (open histograms) and in microaerobiosis (solid histograms). The recipient was SV3081 in all matings. Donors were SV4201 (relevant genotype: wild type), SZ110 (ArcA−), SZ111 (ArcB−), SV4522 (FinO−), SZ112 (FinO− ArcA−), and SZ113 (FinO− ArcB−). Frequencies are averages and standard deviations from six independent matings.
