Alpha toxin gene (cpa) oligonucleotide primers were selected from published sequences (19):5’ GCT AAT GTT ACT GCC GTT GACC 3’ and 3’ TCT GAT ACA TCG TGT AAG 5’.PCR reactions were performed at a final volume of 50 µL with the following reagents: 10 mMTris-HCl, pH 8.3, 50 mM KCl, 50 mM MgCl2, 200 µM dNTP, 10 pmol of each primer, 2UTaq DNA polymerase, and 5 µl of template DNA. Amplification mixture was incubated in athermalcycler PTC-200 DNA Engine. Samples were denatured at 95oC for 5 minutes and thensubmitted to 35 cycles of 1 min at 94oC, 1 min at 53oC, and 1 min at 72oC, with a furtherextension cycle of 10 min at 72oC. C. perfringens type A ATCC 3624 was used as positivecontrol and water as negative control
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