Fig. 7. Pl-Otx2 expression during posterior growth and Pl-Otx1 expression in fully formed mid-body segments. (A) Lateral view; (B,C) ventral views. See text for explicit comparisons of Pl-Otx1 and Pl-Otx2 expression. (A,B) During growth, Pl-Otx2 is expressed ventrally in young segments, primarily in the developing ventral nerve cord (arrows). (C) Pl-Otx1 is expressed in a single, unpaired cell of the ventral ganglion of several contiguous midbody segments, typically beginning in segment VI (left arrow). A bracket marks a fully formed segment in each panel. Vertical scale bar: 50 µm.
