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. 2019 Jul 11;14(7):e0218530. doi: 10.1371/journal.pone.0218530

Fig 2. Principle and application of 5’-AT rich flap sequence to optimize polymerase chain reaction (PCR) thermodynamics and efficiency.

Fig 2

The reaction efficiency was improved by adding customized 10–11 nucleotides long AT-rich sequences at 5’ position of each primer. The flap sequences are incorporated after the 2nd cycle of the PCR–increases the specificity and speed with optimized reaction efficiency.