Fig. S2.
Expression patterns of three conserved expressed gene families: SYNGR (A–C), TPRG (D–G), PURA (H–J). G: cross section at the position indicated in F, the expression was detected weakly in all the axial structures, mainly in the neural tube (NT) and gut. NC: notochord, SM: somites. Scale bars: 1 mm (A, B, D, E, G, H); 100 μm (C, F, I).