Copyright information:Taken from "Webtag: a new web tool providing tags/anchors for RT-PCR experiments with prokaryotes"http://www.biomedcentral.com/1472-6750/7/73BMC Biotechnology 2007;7():73-73.Published online 25 Oct 2007PMCID:PMC2147000. Lanes M – molecular weight markers (GeneRuler 100 bp DNA Ladder, Fermentas). PCR reactions using tags and sense primers (see Table 1) for three PCC73102 genes – uptake hydrogenase small subunit (S), ribonuclease P subunit B (B) and rubisco large subunit (L). Reactions were run containing either 100 ng of genomic DNA (gDNA) or complementary DNA (cDNA) as template.