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Southern hybridization of HindIII-digested chromosomal DNAs from nine representative biofilm-defective mutants with a DIG-labeled pAM120 probe containing Tn916. Lanes: 1, 8F9 mutant; 2, 1C1 mutant; 3, 11E5 mutant; 4, 11B4 mutant; 5, 15B3 mutant; 6, 9F8 mutant; 7, 29E5 mutant; 8, 4B3 mutant; 9, 13A12 mutant. DNA sizes are shown on the right.
