Fig. 5From: Construction and characterization of thymidine auxotrophic (ΔthyA) recombinant Lactobacillus casei expressing bovine lactoferricinDetection of the genetic stability of ΔthyA L. casei-LFEC. M: DNA marker; Lanes 1–5: PCR amplification results of LFEC of the 10 th to the 50 th generation of ΔthyA L. casei-LFECBack to article page