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. 2020 Jun 10;12(6):383. doi: 10.3390/toxins12060383

Figure 2.

Figure 2

(A) Electrophoretic pattern of stx1 gene (614 bp); M: 100–1000 bp DNA ladder; POS: Positive control; Neg: Negative control; Lanes 1–6: positive E. coli strains; Lanes 7, 8: negative E. coli strains. (B) Electrophoretic pattern of stx2 gene (779 bp); M: 100–1000 bp DNA ladder, POS: Positive control; Neg: Negative control; Lanes 1–7: positive E. coli strains; Lane 8: negative E. coli strain. (C) Electrophoretic pattern of eaeA gene (248 bp): M: 100–600 bp DNA ladder; POS: Positive control; NEG: Negative control; 1–7: positive E. coli strains; Lane 8: negative E. coli strain.