For the positive controls, plasmids were constructed by ligation of amplified products from each species into pGEM-T easy vectors (Promega, Madison, Wisconsin, USA), according to the manufacturer’s instructions. The PCR products were obtained by conventional PCR using the Schis_F and Schis_R primers and control plasmids as template. Each recombinant plasmid was produced in Escherichia coli JM109. Each inserted amplicon was sequenced in both directions to confirm its identity.
HRM