Fig. 9
From: Highly distinct genetic programs for peripheral nervous system formation in chordates
Comparison of hypothetical gene regulatory networks for vPNS formation in invertebrate chordates. The two hypothetical networks were built by combining previously published data together with expression and functional results described in the present study. Embryo diagrams indicate the stage at which the genes initiate their expression in the vPNS and are represented for Phallusia mammillata (left GRN) and Branchiostoma lanceolatum (right GRN). Light blue backdrop represents genes expressed in the ventral neurogenic field and purple backdrop represents genes expressed in the ESNs. Green font indicates newly identified genes expressed in the vPNS and black boxes indicate orthologs with conserved expression in the vPNS. Solid line indicates known or probable direct regulation of at least one gene of the targeted backdrop while dotted line indicates a hypothetical indirect regulation