| |
Fig. 2. Expression of wnt7b in Xenopus lung epithelium. (A) wnt7b is not expressed in the lung bud at stage 35/36. (B) The earliest wnt7b expression in the lung bud is detected at stage 37/38. (C) Expression of wnt7b in the lung bud at stage 39. (D, E and F) Transverse sections of stage 39 embryos show wnt7b expression in the entire lung epithelium. (G) wnt7b is expressed in lungs at stage 41. (H, I and J) Transverse sections of the embryo in (G) show that wnt7b is expressed in the entire lung epithelium with stronger expression in the lateral part of lung tubes (I). (K) wnt7b is expressed along the entire lung tube at stage 45. (L, M) Transverse sections show wnt7b expression in the lung epithelium at stage 45. (M′) The magnified image of the boxed region in (M). Red arrows indicate lungs. Abbreviations: es, esophagus; nc, notochord. |
