Figure 4From: Use of colony-based bacterial strain typing for tracking the fate of Lactobacillusstrains during human consumptionReproducibility of single colony RAPD fingerprints. The polymorphismsamplified by primer 272 from conventionally extracted DNA compared to single colony Chelex® extracted DNA are shown for two LAB strains as follows: lane 1, L. rhamnosus strain MW standard DNA extraction; lanes 2 to 4, single colonies of strain MW that were picked into Chelex® resin, stored frozen and then extracted immediately prior to PCR; lane 5, L. acidophilus strain LMG 8151 standard DNA extraction; lanes 6 to 8, single colonies of strain LMG 8151 that were processed with Chelex® as described. The size of relevant molecular size markers (lane M) are shown in bp.Back to article page