Figure 3: Comparison of STC-1 mRNA levels in kidney, liver, and isolated rat islets. (a) is a comparison of amplicon size following qPCR as revealed by agarose gel electrophoresis (2.0% agarose). The STC-1 and GAPDH amplicons generated from kidney and islet total RNA were similar in size. (b) illustrates the relative levels of STC-1 gene expression in rat kidney, liver, and islet total RNA as revealed by real-time qPCR.