Fig. 4

Expression patterns of antagonistic genes to Wnt and pax2/5/8 related to dissolution of basal laminae. a–c Left lateral views of knife-shaped larvae. a’–c’ Dorsal views. Most genes are expressed in the region where internal lumens open into the exterior. Arrowheads denote gene expression regions. csg, club-shaped gland; es, endostyle; omv, oral mesovesicle; 1 pg, future first gill; ph, pharynx; pp, preoral pit. Scale bar, 100 μm for all