Whole mount (A-G) and histological (A’-G”) expression of trpv4 mRNA expression in X. laevis embryos. Lateral view for all whole mount embryos, animal pole to the top (A-D), anterior to the right (E-G); dorsal to the top for all histology images. (A, A’) unfertilized egg; (B, B’) stage 5 (16-cell stage); (C, C’) stage 8 (mid-blastula stage); (D, C’) stage 10 (early gastrula stage); (E, E’) stage 20 (late neurula stage); (F, F’, F”) stage 30 (late tailbud stage); (G, G’, G”) stage 35 (swimming tadpole stage). Arrows indicate regions of gene expression (a, animal pole; nc, notochord; np, nasal placode; tb, tailbud). Dashed lines represent positions of corresponding sections. Scale bars = 250µm.