Protocol 1. PCR system 1) 20μL system is used for verification Taq: Super mix: 2) 50μL system for PCR target genes Pfu mix: DNA: plasmid 50ng; genome 100~200ng 3) 20μL PCR system for microbes Super mix:Bacteria (after picking on the board, back up on the new board and rinse it in the system that has been prepared)