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Agarose (1.2%) gel of RT-PCR amplification products based on the OST 1F-OST 1R (OST) or Com 1-Com 2ph (Com) primer system from various template RNAs. Templates originated from the thiosulfate-plus-nitrate enrichment Bx21, T. denitrificans DSM 1251T, or E. coli K-12. The first lane contains molecular size markers (100 bp). NC, negative control.
