Figure 3

Time effect of Day 14 versus Day 1 (Microarray study). Each cross represents a probe set. The fold change is displayed on the x-axis (in log₂ units); the p-values (corresponding to the t-tests performed) are displayed on the y-axis (in log₁₀ units). Fold changes and p-values were computed with the linear mixed-effect model described in the Methods section. The left and right vertical lines represent fold changes equal to 0.5 and 2, respectively. The horizontal line represents an arbitrary type I error equal to 10^-4.