Fig. 5.
Absolute and relative gene expression data box plots. Each box summarizes the distribution of logged gene expressions in a given condition (time point) and, in the case of the relative data, corresponds to one row of the data matrix. Left panel: Overall absolute expression is going down with time, with (approximately) unchanged and geometric mean references behaving accordingly on the absolute data (the green horizontal line denotes the mean log expression of the unchanged gene). Right panel On the relative data, the unchanged reference appears to be going up, while the geometric mean reference appears to remain unchanged. To recover the absolute data, each box has to be shifted by an amount approximated by the distance of the green dots from the value indicated by the green horizontal line in the left panel (colour figure online)
