Xenbase Image ID: 23748

Fig. 3. Id4 mRNA expression pattern in the early embryo. (A, C, E, G) Dorso-anterior views at stage 13, 15, 17, and 19. (B) Lateral view stage 13. (D, F) Dorsal view stage 15 and 17. (H) Lateral view stage 19. (I, K) Lateral and dorsal views, stage 24. (J, L) Lateral view of head staining, stages 32 and 34. (M) Lateral view stage 37. Embryos show staining in the anterior region of the embryo corresponding to the cement gland (yellow arrowhead). By stage 19, expression is also obvious bilaterally in the olfactory placode (black arrow), eye primordia (blue arrowhead), and in the trigeminal ganglia (red arrow). Dorsal and lateral views show expression in the Rohon–Beard neurons (black arrowhead). In later stages, Id4 is expressed in the liver (marked with a yellow L), branchial arches (black b), kidney (red arrowhead marks tubules in J, L, and M, red arrow marks duct in M), and in migrating melanophores (small red arrowheads in M). Image published in: Liu KJ and Harland RM (2003) Copyright © 2003. Image reproduced with permission of the Publisher, Elsevier B. V. Gene Synonyms Species Stage(s) Tissue id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 13 anterior cement gland primordium id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 17 cement gland primordium Rohon-Beard neuron eye primordium anterior neural fold id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 19 cement gland primordium Rohon-Beard neuron trigeminal ganglion eye primordium optic vesicle neuroectoderm id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 15 cement gland primordium Rohon-Beard neuron id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 24 olfactory placode liver primordium trigeminal ganglion Rohon-Beard neuron pronephric mesenchyme mesoderm neuroectoderm id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 32 olfactory placode eye liver primordium pronephric kidney trigeminal ganglion cement gland id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 33 and 34 olfactory placode eye liver primordium trigeminal ganglion pronephric kidney hindbrain id4.S bhlhb27, id4-a, id4-b, idb4 X. laevis Throughout NF stage 37 and 38 hindbrain trigeminal ganglion branchial arch pronephric kidney pronephric duct melanophore liver eye brain forebrain intersomitic region foregut pharyngeal arch mandibular arch hyoid arch lens notochord spinal cord Image source: Published Larger Image Printer Friendly View

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