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Fig. 2 | BMC Biology

Fig. 2

From: Highly distinct genetic programs for peripheral nervous system formation in chordates

Fig. 2

Summary of comparative gene expression of previously known B. floridae vPNS genes between invertebrate chordates. A Results of in situ hybridization are summarized for genes first described in Branchiostoma floridae. Expression in ventral epidermis is represented in light blue in the schematic representation of late gastrula and mid neurula amphioxus embryos. Expression in ESNs is represented by purple dots in the schematic mid neurula and premouth larva amphioxus embryos. Expression in the ventral neurogenic field in other species is represented as a light blue circle, expression in ESNs as a purple circle, expression in both as a light blue circle with purple stripes, and lack of expression in vPNS tissues as a red circle. Grey circle: not done. The absence of ortholog is indicated by a cross. B–M In situ hybridization for Msx (B, C) at initial tailbud stage for P. mammillata and late gastrula for B. lanceolatum, for Ascl1/2 (D, E), for Klf1/2/4/17 (F, G), for Tlx (H, I) at mid tailbud P. mammillata embryos and neurula stages B. lanceolatum embryos, for Pou4 (J, K) and Isl (L, M) at late tailbud P. mammillata embryos and late neurula B. lanceolatum embryos. Genes expressed in the ventral neurogenic field are represented by a blue circle and genes expressed in ESNs by a purple circle. Genes with no vPNS-specific expression are represented by a red circle. Embryos are shown in lateral view with anterior to the left and dorsal to the top. Scale bar: 50 μm

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