Gene expression during mouse development. RT-qPCR analysis was carried out for the indicated genes on mouse intestinal RNA at indicated stages. Note that the expression patterns of mouse EB13, FCNA, MMP11, MMP14, PPP1RA1 and SLC7A2 were similar to those of their homologs in Xenopus during metamorphosis as observed by microarray, that is, there were higher levels of expression shortly after birth in the mouse when T3 levels are high, just like at metamorphic climax. The expression of NPL and RENBP represent profiles of genes that differ from those in Xenopus. All RT-qPCR results are expressed relative to the control RPS13, with the expression of the genes at E17 arbitrarily set to 1.