亚洲最大av一区二区三区,久久精品九九亚洲精品,国产强暴在线播放中出,狠狠做深爱婷婷丁香综合,国产精品成人自拍av,欧美日韩国产一区二区三区不卡,国产又黑又粗的视频网址,日韩精品欧美精品一区,午夜三级在线免费观看,亚洲黄色美女视频大全

RAA technology, short for Recombinase Aided Amplification, is a technology that utilizes recombinase, single-stranded binding protein and DNA polymerase to perform nucleic acid amplification under isothermal conditions (the optimal temperature is 39°C). The specific principle is: Recombinase, single-stranded binding protein, and primer form polymers to scan double-stranded DNA, unwind double-stranded DNA at sequences homologous to the primers, and single-stranded binding proteins (SSBS) bind to the untwisted single strand to prevent single-stranded DNA refolding. In the presence of energy and dNTP, DNA polymerase completes the strand extension and repeats the process.