 | Endogenous lens (red arrow) and ectopic lenses (green arrows) in Xenopus tadpole derived from an embryo injected with RNA encoding Pax6. |
| Ectopic eyes (A, white arrow) form in Xenopus tadpoles from embryos misexpressing Pax6. Different markers for lens and retina can be identified in ectopic eyes (B) as in wild-type eyes(C). |  |
 | The expression activity of the Pax6 gene lens enhancer is restricted to the presumptive lens ectoderm (blue labeled area) at 9.5 days of gestation in the mouse. |
| Model describing the genetic regulation of lens induction in the mouse. |  |
