Boxplots of relative expression levels. As described in figure 1, normalized expression levels of imprinted genes in human (a) and mouse (b) are shown in boxplots. The x-axis displays the different tissues, and the y-axis indicates relative normalized expression levels. The horizontal bar in each box is the median of all relative expression levels of imprinted genes in human (a) and mouse (b), while the upper and lower boundaries of the box mark the first and third quantile. Whiskers show 1.5 times the box range, whereas circles denote values of data points that lie beyond the extremes of the whiskers (outlier). The respective gene names of outliers are displayed.
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