Fig. 10.

Combinatorial expression in the telencephalic-like region of the adult amphioxus brain. A, B Summary of expression patterns in Figs. 2 and 4 projected on a lateral schematic representation of an adult amphioxus brain (projected outline from the image in Fig. 5g). The grey shading represents the entire domain for each gene. The dashed red line indicates the region of expression overlap with a telencephalon-like profile. Joseph cells are shown in the most dorsal side of the brain, illustrating that they are positioned outside and dorsally to the telencephalon-like region (dashed red line). C Magnified view of the telencephalic-like region showing the dorsal-ventral distribution of gene expression and neurotransmitter identities. Abbreviation: IO infundibular organ