Fig. 8

Co-expression of CaSMP3 and CaSMP20 mRNA throughout embryonic shell development in Crepidula atrasolea. Right lateral (A), left lateral (B), and posterior views (C) of late ovoid embryos show co-expression of CaSMP3 (magenta) and CaSMP20 (green) in the shell field. These two expression domains continue during early organogenesis (D-F) and mid organogenesis (G-H). In the veliger stages, laterally asymmetric expression is most apparent in the shell field edge (I-J). Hoechst is shown in gray, CaSMP3 in magenta, and CaSMP20 in green. ft, foot; sf, shell field; sfe, shell field edge; tn, tentacles; ve, velar lobes; ls, larval statocyst. Scale bars each represent 100 μm unless otherwise specified