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PCR products of Pseudomonas RND family efflux pump genes. Line M: DNA size marker (SMOBIO, DM2301100 bp-3000 bp), line 1–2: mexA (312 bp), line 3–4: mexB (224 bp), line 5–6: mexC (371 bp), line 7–8: mexD (146 bp), line 9–10: mexE (240 bp), line 11–12: mexF (131 bp) and line 13–14: mexX (792 bp).
