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(a) Expression analysis of recombinant LZ8-producing L. lactis after nisin induction for 1–20 hours. Immunoblotting of bacterial lysate was performed with lab-made rabbit anti-LZ8-specific antibody. E. coli-derived recombinant LZ8 was used as positive control. Lane M, prestained protein markers. (b) Correlation curve of the induction times and the intensity levels of band signals by video densitometer.
