Figure 1. Relative degree of gene expression by qPCR. Validation of upregulation of gene expression for CHK1 and CDC25C with qRT–PCR using independent normal retina (494N, 498N) and RB (494T, 498T, 119T, 124T, 131T, 154T, 155T, and 167T) samples. The relative quantity (RQ) value is compared to that of normal retina 494N. The error bars represent standard deviation from the mean.