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Fig. 1.
NaV1.2 and REST/NRSF are expressed in neural tissues during development of X. laevis.a–d, ISH for xNaV1.2: expression is restricted to primary spinal neurons (sn), cranial ganglia primordia (cg), and olfactory placodes (op). In a section of a stage 18 embryo, xNaV 1.2 expression is observed in the lateral and ventral regions of the neural tube. a, Dorsal view, stage 18; b, lateral view, stage 18;c, anterior view, stage 24; d, central transversal section, stage 18; n, notochord;m, presomitic mesoderm; e,left, ISH showing diffuse expression of REST during neurulation (stage 18), including neural folds; right, a sense REST probe does not produce significant labeling in a stage 18 embryo; f, at stage 35, REST/NRSF expression is stronger in the anterior neural tissue; g, RT-PCR showing the coexpression of xNaV1.2 and REST/NRSF in dissected tissues at the stages annotated; np, neural plate; nt, neural tube; pm, presomitic mesoderm; s, somites. The constitutively expressed transcript EF1α is shown as a control. |
