Fig. 3

Identification of sul1 (433 bp), sul2 (721 bp), and sul3 (244 bp) genes causing sulfonamide resistance by mPCR (M, marker (Thermo Scientific, SM0241, 100 bp DNA Ladder); P, positive control; N, negative control; 1, 4, 8, 9, 12, sul1, sul2, and sul3), 2 and 7, sul 2 and sul 3; 3 and 6, sul3; 5 and 10, sul2; 11, sul1 and sul2)