... used as a positive control to display omcA(lane 1) and omcB (lane 6). DNA standards are indicated at the left and right of the agarose gels. (B) Visualization and separation ofhigh molecular mass ... omcB–(lane 3), and omcA–omcB–(lane 4), and complemented strains omcA–⁄ pBAD202 ⁄ D-TOPOomcA (lane 5) and omcB–⁄ pBAD202 ⁄ D-TOPOomcB (lane 6). A molecular massstandard is indicated at the ... to amplify omcA (lane 2), omcB (lane 3), mtrA(lane 4) and mtrB (lane 5) in the omcA–mutant, and omcA (lane 7),omcB (lane 8), mtrA (lane 9) and mtrB (lane 10) in the omcB–mutant. MR-1R was...