Fig. 9
From: New insights into mesoderm and endoderm development, and the nature of the onychophoran blastopore
Expression of mef2 In all panels anterior is to the left, except panel G (anterior up). Panels A, B, D and G represent ventral views. Panels C, E (thin section), F and H (thin section) represent lateral views, dorsal up. Panels A´, B´, D´, E´ and H´ represent SYBR Green staining of the embryos shown in corresponding panels. Dashed circles in panels A, B and D mark the posterior pit region. The asterisk in panel A marks enhanced expression anterior in the embryonic slit. The asterisks in panels C–E mark ectodermal expression overlying the last-formed posterior somite(s). Arrowheads in panels F and G point to expression in the mesoderm of developing appendages. The red bar in panels H/H´ mark the area of mesodermal expression. Developmental stages are indicated (staging system after [9], their supplementary data). Abbreviations: ect, ectoderm; hl, head lobe; L, leg; mes, mesoderm; pp, posterior pit; sp, slime papilla