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Negative image composition of SybrGold®-stained DGGE gels. Sampling dates of Batch 1, 2, 3, and 4 are indicated in parenthesis. Lanes are organized on a time-scale basis. Bands indicated with a white arrow head were excised and sequenced. Most probable identification of sequenced bands are indicated at right of the image. Numbers in parenthesis indicate the number of bands excised for every position.
