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Fig. 7 | EvoDevo

Fig. 7

From: Spatiotemporal regulation of nervous system development in the annelid Capitella teleta

Fig. 7

Ct-ash1 is expressed in the neuroectoderm. (A–K) Ct-ash1 transcripts were detected in stage 3–7 animals using WMISH. Images are to the same scale as in Fig. 2 and 3. Arrow in (a) indicates expression in the anterior neuroectoderm. The epibolizing front of the embryo is denoted with dashes. White arrowheads in (d) point to single cells expressing Ct-ash1 in a circumferential ring posterior to the mouth opening. Arrows in (e) point to expression around the stomodeum. Arrowheads in panels (f), (i), and (j) denote expression in the presumptive visceral mesoderm. Arrows in panels (g), (j), and (k) point to expression at the lateral edges of the brain. In (h) and (j), black arrowheads point to a subset of expression in the anterior ventral neuroectoderm, and white arrows point to expression in the ventral neuroectoderm. Black arrowhead in (k) points to expression in the PGZ. In each panel, the stage of the animal is indicated in the lower left, and the view is indicated in the lower right (lat lateral, vlat ventrolateral, vent ventral, dors dorsal, ant anterior). In all lateral and ventrolateral views, anterior is to the left and ventral down; in all ventral views, anterior is to the left; in all anterior views, ventral is down. Panel (g) is a cropped image of the episphere from a ventral view. An asterisk marks the position of the mouth, and the prototroch (pt) and telotroch (tt) are labeled with dashes. ST3epi, stage 3 epiboly; STBPclg, stage 3 blastopore closing

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