Fig. 6From: Degenerate primers as biomarker for gene-targeted metagenomics of the catechol 1, 2-dioxygenase-encoding gene in microbial populations of petroleum-contaminated environmentsDNA fragments of different lengths (360–380 bp) were amplified by the INDO-U primer pair. Lanes 1–7 GSN3, GSN8, GSN15, GSN20, GSN23, GSN4, GSN16; lanes 8–14 GSN9, GSN13, GSN12, GSN5, GSN21, GSN28, GSN22; rightmost lane 100-bp DNA markerBack to article page