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Southern blotting of the malP-malR DNA region in L. lactis 19435 and TMB5004. A) Southern blotting results using probe X and Y (see below). B) Relevant HaeIII and XbaI restriction recognition sites in the malR-malP region of L. lactis. Probe X was constructed by using primers A and B and probe Y was constructed by using primers C and D. 10 mm corresponds to 0.2 kb.
