Figure 3

Expression patterns of Tt - hbn, Tt - NK2.1, Tt - Six3/6 , and Tt - fez in the embryos and larvae of Terebratalia transversa. Abbreviations: ACE, animal cap ectoderm; AL, apical lobe; AT, apical tuft; BP, blastopore; DE, anterior dorsal ectoderm; DN, anterior dorsal ring of ectoderm; ML, mantle lobe; PD, pedicle lobe; VE, anterior ventral ectoderm; VLE, anterior ventrolateral ectoderm. All scale bars = 25 μm.