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Principle of recombinase polymerase amplification. This figure was drawn using Figdraw software online (https://www.figdraw.com/static/index.html). The recombinase combines with the primer to form a primer-recombinase complex, which searches for homologous sequences in the double-stranded DNA for strand exchange, followed by DNA synthesis under the action of DNA polymerase, and the single-strand binding protein stabilizes the DNA single strand.
