Fig. 2From: Degenerate primers as biomarker for gene-targeted metagenomics of the catechol 1, 2-dioxygenase-encoding gene in microbial populations of petroleum-contaminated environmentsTime course of growth of 21 bacterial species in culture broth according to spectrophotometric measurement of absorbency. The GSN15 (blue line, filled circles) and GSN11 (red line, filled triangles) represent minimum and maximum growth, respectively; the growth profiles of all other isolates (in grey, no symbol) fall in between this maximum–minimum rangeBack to article page