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Figure 6. A-D prime : X-Delta-2 role in the neurogenic placodes. Noninjected (Nic) controls (A-D) and embryos injected on the left-hand side with X-Delta-2 morpholino (MO; A prime -D prime ) were analyzed for the expression of N-tubulin (A,A prime ) X-Ngnr-1 at stage 21 (B,B prime ) and stage 25 (C,C prime ), and for the expression of X-Delta-2 at stage 25 (D,D prime ). Embryos at stage 21 are shown from the anterior side with dorsal up, and the ones at stage 25 are shown from the lateral side with dorsal to the top, Nic with anterior to the right side, and injected embryos with anterior to the left side. Arrows in A prime and B prime indicate the N-tubulin and X-Ngnr-1 expression, respectively, in the profundal-trigeminal placodal area (pPrV). pAD, anterodorsal lateral line placode; pM, middle lateral line placode. Asterisk indicates the injected side. Note that the stage 25 Nic inC and D for X-Ngnr-1 and X-Delta-2 are the noninjected side of the same embryo shown in C prime and D prime , respectively. Image published in: Peres JN and Durston AJ (2006) Copyright © 2006. Image reproduced with permission of the Publisher, John Wiley & Sons. Gene Synonyms Species Stage(s) Tissue dlc.L delta-2, delta2, dll3, x-delta-2, X-Delta2 X. laevis Throughout NF stage 25 lateral line placode forebrain midbrain hindbrain eye anterior neural tube neurog2.S atoh4, neurog2-a, neurog2-b, neurogenin 2, neurogenin-2, neurogenin-related-1, neurogenin2, ngn-2, ngn2, ngnr, ngnr 1a, Ngnr-1, Ngnr1, X-ngnr-1, xngn2, Xngnr-1, XNgnr1 X. laevis Throughout NF stage 21 trigeminal placode neural tube cranial placode profundal placode neurog2.S atoh4, neurog2-a, neurog2-b, neurogenin 2, neurogenin-2, neurogenin-related-1, neurogenin2, ngn-2, ngn2, ngnr, ngnr 1a, Ngnr-1, Ngnr1, X-ngnr-1, xngn2, Xngnr-1, XNgnr1 X. laevis Sometime during NF stage 25 to NF stage 28 lateral line placode forebrain olfactory placode neural tube middle lateral line placode Image source: Published Larger Image Printer Friendly View

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