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Growth curves of DHB4 (●); FA113 (■); FA113/pTrcvtPA/pFA5 (♦); and DHB4/pTrcStIIvtPA/pBADdsbC (▴) grown aerobically at 37°C in LB medium in test tubes. Expression of vtPA was induced at late log phase as described in the text. Optical density was measured in a microtiter plate reader.
