FIG 5.
Mixed culture of E. coli MG1655 lac::Tc/pTrc99A (white arrows) and E. coli MG1655 lac::Cm/pTrc99A-Ptrc-budAB (black arrows), grown anaerobically on LB agar at pH 5.00 with 0.5% glucose, 1 mM IPTG, and 100 μg/ml ampicillin at 37°C for 24 h.
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