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Figure 1. Xenopus retinaldehyde dehydrogenase (XRALDH2) is expressed in gut-specific patterns during looping morphogenesis. A-F: Whole embryos (A,B; lateral views; anterior, top; dorsal, left) or isolated gut tubes (C-F) subject to RNA in situ hybridization with a probe for XRALDH2. A: Stage 35. B: Stage 39. C: Stage 41, ventral view. D: Stage 43, ventral view of foregut. E: Stage 43, ventral view. F: Stage 44, dorsal view. Arrowheads indicate the hepatopancreatic duct, and asterisks indicate the posterior stomach. hg, hindgut; du, duodenum; st, anterior stomach; gb, gallbladder; apex, prospective center of intestinal coil. |
