Fig. S3.
Expression of satb2, gsc-b, tbx3-a, and tbx2-a. Gene and stage are indicated in figure. Anterior to left in all lateral views, anterior to top in all sections. For those genes with a section shown, the plane of section is shown as a red line on the corresponding whole-mount panel. (Q) tbx3-a is expressed in both CNCCs (black arrow) and endoderm (white arrow) of the PAs.