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T7 overexpression of the gal genes of L. casei 64H. Probes were prepared from BL21(λDE3) containing plasmids with different fragments of the gal operon of L. casei 64H. Lanes: 1 and 2, pKBL392; 3 and 4, pKBL393; 5 and 6, pKBL384; 7 and 8, pKBL285. Probes in lanes 2, 4, 6, and 8 were prepared from cultures containing rifampin.
