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Fig. 10 | EvoDevo

Fig. 10

From: The ParaHox gene Gsx patterns the apical organ and central nervous system but not the foregut in scaphopod and cephalopod mollusks

Fig. 10

Expression of Aen-Gsx in metamorphic competent larvae (70 hpf) of the scaphopod Antalis entalis. In all three cryosections, anterior (a)–posterior (p), dorsal (d)–ventral (v) and left (l)–right (r) axes indicate the orientation. The statocysts are labeled with asterisks. a Aen-Gsx is expressed in the region of the cerebral (cg) and pedal (pg) ganglia as well as in the region of the anterior foot (f) (arrow). Note the Aen-Gsx expression in the region of the nascent captacula (black dashed circle). b, c Aen-Gsx expression in the region of the nascent captacula (black dashed circle), the cerebral ganglia (red dashed circle), and pedal ganglia (green dashed circle). The bright-field micrograph (b) and the nuclear counterstain (blue, Dapi) show the same individual of the same orientation and size. Note the perikaryal layers around the cerebral and pedal ganglia shown in c. m mantle, mg midgut gland, pt prototroch, pv pavilion. Scale bars 100 µm

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