
Fig. 6. Morphology of an Otx2
/-; Gbx2/ embryo at 10.5 d.p.c. Compared with wild-type (A) and Gbx2/ (B) embryos, Otx2
/-; Gbx2/ embryos (D) show compromised development and severe abnormalities of the anterior CNS; while, compared with the head-less phenotype of Otx2
/- embryos (C) it is evident that the anterior neural tube of Otx2
/-; Gbx2/ embryos (D) develop morphological similarities having midbrain and forebrain. Moreover, the heart (D) reveals normal morphology when compared with hOtx12/hOtx12; Gbx2/ embryos (Fig. 1D). Abbreviations as in previous figures plus, he, heart.