Patent attributes
In a method for amplifying a DNA, comprising performing PCR using a sense primer and an antisense primer, PCR is performed in the presence of an additional sense primer comprising the sense primer and an oligodeoxyribonucleotide having a first additional sequence and ligated to the 5′ end of the sense primer and an additional antisense primer comprising the antisense primer and an oligodeoxyribonucleotide having a second additional sequence complementary to the first additional sequence and ligated to the 5′ end of the antisense primer; a Tm value of the additional sequences is lower than Tm values of the sense primer and the antisense primer; and annealing temperature in PCR is initially set to be a temperature at which the additional sequences do not anneal and changed in the course of PCR to a temperature at which the additional sequences anneal to each other.
