Fig. 3From: Site-specific bacterial chromosome engineering mediated by IntA integrase from Rhizobium etli Isolation of integrants. Visualization of random integrants resulting from integration of pK18 mob att Δplac into R. etli 557. Note the presence of a relatively high frequency of nonfluorescent colonies, indicating integration of pK18 mob att Δplac into the LP sectorBack to article page