PCR-DGGE profiles of the predominant bacterial communities in vaginal swabs from five HPV-negative women (left: N1–N5) and five HPV-positive women (right: H1–H5). Lane M is a marker constructed in this study with the identified bands to facilitate the interpretation of the figure. Bands: a: Lactobacillus fabifermentans strain, LMG 24284 16S ribosomal RNA; b: Gemella haemolysans strain, ATCC 10379 16S ribosomal RNA; c: Staphylococcus warneri strain, AW 25 16S ribosomal RNA; d: Streptococcus mutans strain, ATCC 25175 16S ribosomal RNA; e: Streptococcus sobrinus strain, ATCC 33478 16S ribosomal RNA; f: Escherichia fergusonii, ATCC 35469 16S ribosomal RNA; g: Actinomyces graevenitzii strain, CCUG 27294 16S ribosomal RNA; h: Actinomyces turicensis strain, APL10 16S ribosomal RNA; i: Actinomyces viscosus strain, NCTC 10951 16S ribosomal RNA; j: Actinomyces israelii strain, CIP 103259 16S ribosomal RNA. The bilateral part of the figure shows the marker files from different DGGE gels. Each peak in the files stands for one marker. A pairwise analysis, using Gel Compare® software, of the gel marker in each gel indicated that the marginal discrepancies of markers between each gel were negligible.