Tbx5 and the Retinotectum Projection

Science  07 Jan 2000:
Vol. 287, Issue 5450, pp. 134-137
DOI: 10.1126/science.287.5450.134

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Dorsal and ventral aspects of the eye are distinct from the early stages of development. The developing eye cup grows dorsally, and the choroidal fissure is formed on its ventral side. Retinal axons from the dorsal and ventral retina project to the ventral and dorsal tectum, respectively. Misexpression of the Tbx5 gene induced dorsalization of the ventral side of the eye and altered projections of retinal ganglion cell axons. Thus, Tbx5 is involved in eye morphogenesis and is a topographic determinant of the visual projections between retina and tectum.

  • * These authors contributed equally to this work.

  • To whom correspondence should be addressed. E-mail: ogura{at}

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