Fig. 1From: Identification of suitable reference genes for real-time quantitative PCR analysis of hydrogen peroxide-treated human umbilical vein endothelial cellsCt values of 15 candidate reference genes in all samples. Raw Ct values of eight samples, under normal conditions and different concentrations of H2O2, are described using a box and whisker plot. The outer box is determined from the 25th to the 75th percentiles, and the line across the box is the medianBack to article page