Figure 2

Early embryogenesis involves many more regulated genes than late organogenesis during mouse development. The gene expression levels were compared between each pair of adjacent developmental stages to identify developmentally regulated genes. The total number of the genes regulated between the two stages (p < 0.01) were shown as a horizontal column (open and purple shaded columns). The number of genes whose expression levels were changed only between the two indicated stages, thus termed unique regulated genes, was shown as the purple shaded portion of the columns and its percentage in the total regulated genes was shown next to the column. Some enriched function categories (Gene Ontology or GO) for each group of uniquely regulated genes are shown on the right.