Linear regression analysis. Linear regression analysis of the correlation between allelic expression ratios for qTCA (y-axis) and pyrosequencing (qPyro; x-axis) for 3 markers MPP1 (top left), FHL1 (top right), and IDS (bottom left). Data points were generated according to data in Table 2. For each gene, a statistically significant correlation (P ≤ .0001) was observed when expression based on qTCA was compared with that based on quantitative pyrosequencing.