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    Science. 1991 Mar 8;251(4998):1239-43.

    Subtle cerebellar phenotype in mice homozygous for a targeted deletion of the En-2 homeobox.

    Joyner AL, Herrup K, Auerbach BA, Davis CA, Rossant J.

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    Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.

    Abstract

    The two mouse genes, En-1 and En-2, that are homologs of the Drosophila segmentation gene engrailed, show overlapping spatially restricted patterns of expression in the neural tube during embryogenesis, suggestive of a role in regional specification. Mice homozygous for a targeted mutation that deletes the homeobox were viable and showed no obvious defects in embryonic development. This may be due to functional redundancy of En-2 and the related En-1 gene product during embryogenesis. Consistent with this hypothesis, the mutant mice showed abnormal foliation in the adult cerebellum, where En-2, and not En-1, is normally expressed.

    PMID:
    1672471
    [PubMed - indexed for MEDLINE]

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