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Figure 2. Xenopus retinoic acid hydroxylase (XCYP26A1) is expressed in patterns complementary to Xenopus Retinaldehyde Dehydrogenase (XRALDH2) during looping morphogenesis. A-F: Whole embryos (A) or isolated gut tubes (B-F) subject to RNA in situ hybridization with a probe for XCYP26A1. A: Stage 35 (lateral view; anterior, top; dorsal, right). B: Stage 41, ventral view of foregut. C: Stage 42, ventral view. D: Stage 42, dorsal view. E: Stage 43, ventral view. F: Stage 43, dorsal view. fg, foregut; hg, hindgut; du, duodenum; eso, esophagus. |
