Standardization of the HRM real-time PCR
The analytical sensitivity of HRM real-time PCR was determined using 10-fold serial dilutions (4.3×107-4.3×102 copies) of the equal concentration mixture of S. japonicum and S. mekongi positive control plasmids in distilled water. The lowest detection was equal to or less than 4.3×102 copies of each positive control plasmid (Fig. 1) which is equivalent to 4×10-7 ng of each genomic DNA of S. japonicum and S. mekongi, when considering 40 cycles as the cut-off detection limit.