Agarose gel electrophoresis of gene order confirmatory PCRs for Pseudanabaena limnetica (Castaic lake). Lanes 1–4 display specific 2078 bp products for GPPF1/MIBR1 PCR at 45, 50, 55, and 60°C respectively; lanes 5–8 do not have any specific products of expected size for MIBF1/GPPR1 PCRs at 45, 50, 55, and 60°C respectively. M. 500 bp marker.