Movie 6.

The lateral platemesoderm at 16 hpf is devoid of wnt9b expression, related to Fig. 2E-E′. Scroll through a series of confocal z-planes from the dorsal towards ventral side of a 16 hpf embryo. wnt9b expression appears stronger in ventral and anterior positions of the neural tube. Arrows point at the lateral plate mesoderm. Scale bar: 30 μm.