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Amplification of a specific 666 bp band in 7 strains generated using pmrA F0145 and E2477 primers. Abbreviation: M, 100 bp DNA Step Ladder (1 kbp); C + (positive control), P116C2; C-, negative control 1, P111C2; 2, P111C3; 3, P111C4; 4, P211C1; 5, P211C2; 6, P211C3 and 7, P211C4.
