Unexpected amplification during rtPCR with CDC primer sets in no-template control condition. (A) Quantitative rtPCR result by using all primer sets in Table 1 in no-template control. All primers in Table 1 were tested, and the data were represented as black traces, except CDC_N2 and CDC_N3 primer sets. (B) Gel electrophoresis result confirming the amplification by CDC_N2 and CDC_N3 primer sets in no-template control.