Fig. 8.
The onset of mandibular defects precedes palatal shelf elevation. (A-D) Sagittal views of 3D reconstructions from microCT scans (A,B) and Alizarin Red/Alcian Blue staining (C,D) of newborn control and Wnt1-Cre;Erk2fl/fl skulls. Arrow in D points to the malformed mandible in Erk2 mutant mice. (E-H) Intraoral views of 3D reconstructions from microCT scans (E,F) and Alizarin Red/Alcian Blue staining (G,H) of newborn control and Wnt1-Cre;Erk2fl/fl mandibles. (I) Quantification of the volume of control and Wnt1-Cre;Erk2fl/fl mandibles from 3D reconstructions. *P<0.05. (J-M) Macroscopic sagittal views of E13.5 and E14.5 control and Wnt1-Cre;Erk2fl/fl embryos. Arrowheads indicate malformed mandibles. (N-Q) Skeletal staining of skulls and mandibles from E14.5 control and Wnt1-Cre;Erk2fl/fl embryos. n=3 for each stage. Scale bars: 1 mm.