Fig. 4
From: Ancestral mesodermal reorganization and evolution of the vertebrate head
Difference of Wnt/β-catenin-signalling input in the amphioxus and vertebrate dorsal mesoderm. Nuclear β-catenin staining in the Xenopus dorsal mesoderm of control embryos (a–c; n = 14, 100 %), embryos injected with 400 pg/cell Xldd1 mRNA (d–f; n = 4, 100 %) and in the amphioxus dorsal mesoderm (g–l); (g–i) lateral view and (j–l) dorsal view. Nuclei were stained with DAPI. The dotted white lines indicate the dorsal mesoderm. s somite