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SmaI PFGE restriction pattern of Lactococcus lactis BGBM- 50 and its plasmid cured derivates. Lane 1=BGBM50, lane 2=BGBM- 50-8, lane 3=BGBM50-34, lane 4=BGBM50-11, lane 5=BGBM50- -13, lane 6=BGBM50-14, lane 7=BGBM50-25, lane 8=BGBM50-62. Arrows indicate SmaI DNA fragments missed in cured derivatives
