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PCR-DGGE profiles generated from pooled crop DNA, using primer pair HDA1-GC and HDA2 (22 to 55% DGG). The sample time is indicated above the lanes. Lane M contains the identification ladder composed of PCR products from the following reference strains of Lactobacillus: L. aviarius (Lav) ATCC 43234, L. johnsonii (Lj) ATCC 33200, L. fermentum (Lf) ATCC 14931, L. acidophilus (Lac) ATCC 4356, L. salivarius (Ls) ATCC 11741, and L. reuteri (Lr) ATCC 23272.
