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. 2016 Apr 5;16:59. doi: 10.1186/s12866-016-0674-y

Fig. 1.

Fig. 1

Milestones in construction of unstable BHR vector. Circular maps of intermediate (a, b and c) and final vectors (d, e and f) are drawn to scale. Only intact orfs are indicated. Unique or double restriction sites important for cloning are shown, those described in the text are in bold. T1 marks the divergent transcription terminator sequence Tpro/Tlyz of P1 prophage [49]