Expression of Ct-eve2. Stages are marked in the lower left of each panel. Panels A, C, E, F, G, H, I and Q are ventral views; B, D, J and M are lateral views with ventral down; K is a ventrolateral view; L, O and P are dorsal views; N is a dorsolateral view. Anterior is to the left for all panels. An asterisk marks the blastopore in A and B and the mouth in all other panels. (A,B) Ventral (A) and lateral (B) views of the same animal. Ct-eve2 expression at the posterior edge of the blastopore (arrow in B) and in mesoderm precursor cells (arrow in A). (C,D,E,G) Expression in mesoderm precursor cells (arrow in C,E), ectodermal cells anterior to the telotroch (small arrows in D) and the hindgut (arrowhead). Panel C is a composite of multiple focal planes. (F) Expression in the ventral nerve cord (VNC) (bracket in F). F and G are different focal planes of the same animal. (H) Expression in the VNC (horizontal arrows) and ectodermal cells (arrowheads). (I) Expression in the foregut (fg), mid-body ectoderm, mesoderm of the PGZ (arrows) and hindgut (arrowhead). (J-L) Expression in three rows of ectodermal sensory structures: ventral, medial and dorsal rows. K is an enlarged view of the dorsal row of ectodermal sensory structures (arrows). Arrowhead in J points to hindgut expression. L shows the dorsal row of Ct-eve2-expressing cells (dsr). (M-O) Mesodermal expression along the dorsal midline (arrows in M,O). N is an enlarged view of dorsal mesoderm expression. Rows of labeled cells (arrows) extend from the dorsal midline. O and P are the same animal. Expression persists in the hindgut (arrowhead in M and P) and PGZ (bracket in O and P). (Q) Arrowhead shows prominent expression in the rectum in late larval stages. dsr: dorsal sensory row; fg: foregut; msr: medial sensory row; St 3b: stage 3 blastopore; tt: telotroch; vsr: ventral sensory row.