<b>A.</b> Cross species analysis of the genes in the Notch pathway.

<p>Fold change scatterplots. Cross species comparison of the fold change expression of the genes in the pathway “Development, Notch Signaling Pathway” from GeneGo. In green are marked the genes for which fold change differ in mouse and rat within the three comparisons: Blastocyst versus (vs) Morula, ICM versus Blastocyst, and ICM versus Morula. In red are marked those genes that have a similar fold change pattern in the two species in each comparison. With a special marker there are highlighted 6 selected genes that have differential expression patterns in the two species. The complete list of all the genes analyzed with their fold changes is reported in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047107#pone.0047107.s011" target="_blank">Table S3</a>. <b>B.</b> Expression signal profile plots. Expression level of 6 selected genes from the Notch pathway. In blue are marked the expression levels of the genes in the mouse and in red the one in the rat embryos. MO: Morula, ICM: Inner cell mass, BL: Blastocyst. The unit is log2 of measured expression.