Image Gallery Xenopus – HuCD+ neurons (pink) and col2a1 (green) Mouse – mutant mouse with cleft lip Xenopus – HuCD+ neurons Mouse – neural crest cells (green) Xenopus – cartilage (red) and HuCD+ neurons (green) Chick – migrating neural crest cells Mouse – section of palate and tongue Xenopus – sox9 (green) and sox10 (red) Xenopus – craniofacial cartilage