Expression of Nvi-Hox7 (top row, panels A, B and C) and Nvi-antiHox7 (bottom row, panels D, E and F). The anterior end is to the right on all panels. All views are ventral. Black and white asterisks mark the background. (A, D) Expression in 4-segment worm. (B, E) Expression in juvenile worms of about 10 segments. (C, F). Several central segments of the juvenile worms of about 20 segments at higher magnification are shown. Expression patterns for Nvi-Hox7 (C) and Nvi-antiHox7 in VNC are different. See text for details.