Figure 4

DGGE gel pictures show 16S rDNA PCR products of 3 healthy individuals' diluted faecal DNA extracts: 5, 10, 15 and 20 times, respectively. Lanes 1-4, 9-12, 17-20 show 16S rDNA PCR products of diluted DNA extracted using Qiagen. Lanes 5-8, 13-16, 21-24 show16S rDNA PCR products of diluted DNA extracted using easyMag® with 140 μL silica.