Scatter plots showing the relationship of gene expression between group LC and GC.

<p>The dots above and below the dotted slanted lines show the genes in group GC up- and down-regulated, more than 2 folds and/or less than half, vs. those in group LC, according to SAM analysis. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0040112#pone-0040112-g001" target="_blank">Figure 1</a> for the abbreviations.