Gene Expression & Cell Subsets Figure 4. The proportion of differentially expressed genes in PBMC in relation to (a) the number selected of top ranked differentially expressed genes in the monocyte population, and (b) the cut-off selected for fold change in monocyte genes after LPS stimulation. doi:10.1371/journal.pone.0004427.g004 Figure 5. Comparison of IL-1a, IL-1b, IL-6 and IL-10 gene expression in different samples after stimulation with LPS for 3 and 24 hours. The log2-fold change (M value) and standard error for the expression of each gene are plotted for each sample. doi:10.1371/journal.pone.0004427.g005 PLoS ONE | www.plosone.org 6 February 2009 | Volume 4 | Issue 2 | e4427