Figure 1From: Evolutionary changes in the notochord genetic toolkit: a comparative analysis of notochord genes in the ascidian Ciona and the larvacean OikopleuraThe notochord of Ciona intestinalis and Oikopleura dioica embryos. Microphotographs of a Ciona intestinalis embryo (A) and an Oikopleura dioica embryo (B) at comparable developmental stages. In each panel the notochord is highlighted by an arrowhead. Anterior is to the left and dorsal is up.Back to article page