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Bacterial DNA extraction from fecal samples. DNA was extracted from 50 mg of the fecal sample. A pair of universal primers, 27F (5'-AGAGTTTGATCCTGGCTCAG-3') and 1492R (5'-GGTTACCTTGTTACGACTT-3'), were used for PCR amplification. The amplified DNA was verified by 1.5% agarose gel electrophoresis.
