Figure 5

Plots of the curves ( f , see text) fitted to the histogram counts of P ( d _g < 0) values for pairwise within and between condition comparisons – Choe Data set. A curve is plotted for each pair of arrays in the Choe data set (left: within condition comparisons, right: between condition comparisons). The plots show the expected shape of uni-modality and smoothly decreasing tails under the null (left) and deviations from this pattern, largely in terms of an excess of over-expressed genes in the right-hand tails, for the between condition comparisons (right).