title: Resequencing of BLA3-E1
design: First, the DNA sample was randomly interrupted to generate the required length of DNA fragments, and the sticky end formed by the interruption was repaired into A flat end. Then, base "A" was added to the 3 'end to make the DNA fragments connected to the special joint with base "T" at the 3' end. Finally, PCR was used to amplify the DNA fragments with connectors at both ends to complete the construction of the whole library