Fig. 6From: Development of a counterselectable seamless mutagenesis system in lactic acid bacteriaGeneration of a seamless in-frame aldB deletion mutant. Twenty-one p-Cl-Phe-resistant colonies were amplified by PCR to screen for the deletion of the aldB gene (711 bp). The expected PCR fragment from the mutant type (∆) is approximately 2.0 kb, while the band from the wild-type (WT) is about 2.7 kbBack to article page