| abstract |
(57) [Summary] [Objective] It is intended to improve the sensitivity of gene amplification in a nucleic acid synthesis method for animal body fluids such as blood, samples derived from plants, and environmental samples. [Structure] In a nucleic acid synthesis method for amplifying a target gene from an animal body fluid such as blood, a plant-derived sample, or an environmental sample, polyamine is added to the reaction solution at about 10-0.01 mM, preferably 2-0.5 mM. It is characterized by doing. |