Figure 5From: Quality control in microarray assessment of gene expression in human airway epitheliumVariability in maintenance gene expression levels in samples that pass or fail QC criteria. The coefficients of variation for each of the 100 maintenance genes were calculated across 2 data sets: a data set of 10 samples failing QC criteria (red squares), and a randomly selected data set of 10 samples that pass QC criteria (blue triangles). Upper and lower boundaries of shaded regions represent 95th and 5th percentiles, respectively, of coefficient of variation across samples failing the QC criteria (red box) and coefficient of variation across samples passing the QC criteria (blue box).Back to article page