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EMBO J. 1989 Jan;8(1):91-100.

Hox-7, a mouse homeobox gene with a novel pattern of expression during embryogenesis.

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D├ępartement de Biologie Mol├ęculaire, Institut Pasteur, Paris, France.


A new mouse Hox locus, Hox-7, is defined on chromosome 5 by a gene homologous to the Drosophila gene msh, which contains a homeobox sequence distantly related to that of Antennapedia. By in situ hybridization, expression of Hox-7 is detected in the neural fold of embryos, and also in cephalic neural crest. In addition, expression takes place in the developing valves of the embryonic heart. Mandibular and hyoid arches are strongly labelled, expression becoming restricted to the most distal part of mouth and face processes as development proceeds. Intense labelling is also observed in developing limb buds, in the distal region which has been shown to be essential for limb morphogenesis. The pronounced accumulation and regional localization of Hox-7 transcripts in mandibular and limb processes point to a specific morphogenetic role for this mouse homeobox gene.

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