Fig. 10
From: New insights into mesoderm and endoderm development, and the nature of the onychophoran blastopore
Expression of nau In panels A and B anterior is to the left; in panel C anterior is up. Panels A and B represent lateral views, panel C shows as ventral view. The arrowheads point to expression in the mesoderm of developing appendages. Developmental stages are indicated (staging system after [9], their supplementary data). Abbreviations: j, jaw; hl, head lobe; L, leg; sp, slime papilla