Fig. 3From: Expression of Hox, Cdx, and Six3/6 genes in the hoplonemertean Pantinonemertes californiensis offers insight into the evolution of maximally indirect development in the phylum Nemertea Hox and Cdx expression in P. californiensis. All images show frontal views with larval anterior to the left. Left column shows invagination-stage larvae. Right column shows rudiment-stage larvae. Arrowheads indicate paired posterior invaginations. Asterisk indicates apical organ.Back to article page