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Aesr chimera restores aerotaxis in E.coli BT3354. BT3312 (aer tsr) cells were transformed with pAVR4 (aesr+) to create BT3354. The duration of responses to a 0 to 21% oxygen increase (
) and a 21% to 0 oxygen decrease (
) were measured by the temporal oxygen gradient assay (Experimental procedures). BT3352 (BT3312 pAVR2); RP437 (wild type); NR, no response.
