Morphological analysis of genetic interactions between Foxe3 and Pitxe3. (A-H) Hematoxylin and eosin (H&E) stained sections of a Foxe3+/- eye (A), an eye from +/ak embryo (B), an eye from a Foxe3-/- embryo (C), an eye from ak/ak embryo (D), an eye of an embryo heterozygous for Foxe3 and Pitx3 (E), an eye from an embryo deficient for Foxe3-/- and heterozygous for Pitx3 (F), an embryo heterozygous for Foxe3 and deficient for Pitx3 (G) and an eye of an embryo deficient for Foxe3 and Pitx3 (H). Notice the club-shaped lens in the ak/ak embryos. Arrows in sections point to the connections between the lens and surface ectoderm that broke off during the preparations of sections. L- lens