1. Transformation of E.coli TOP10 with pZC320 2. LB + ampicillin(30μg/mL) + X-gal + IPTG 3. PCR for AID transcription fusion with translation fusion AID+T7 RNA-polymerase Primers: AIDlNrH and T7pXbSal Template DNA: translation fusion AID+T7 RNA-polymerase (pMPM-T5) Annealing temperature: 55°C Time: 4 minutes 20 cycles