behavior/neurological
growth/size/body
• 50% reduction in weight of homozygous adults compared to wildtype
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• severe growth retardation during development
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nervous system
• cerebellum cytoarchitecture is disrupted
• cerebellum contains lysosomal storage bodies in nucleated cells that are not observed in wildtype
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• the external granule cell layer contains fewer cells than in wildtype at P0
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• P0 homozygotes have a Purkinje cell layer that is dispersed into a multicellular layer
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• Purkinje cells do not develop highly organized dendritic trees, but rather extend their dendrites in an uncoordinated fashion, appearing shorter and disoriented
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• Purkinje cells soma are ectopically placed
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• Bergmann glia cell radial extension into the molecular layer is misaligned
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• Bergmann glia cell radial extension into the molecular layer is misaligned
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integument
• posterior part of homozygous mutants remains naked throughout adult development
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• hair follicles from the shoulder skin contained thin, but almost normally structured hair shafts, however, hair follicles from the lumbar skin contained extremely thin and short hair shafts
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• eosinophilic inclusion bodies, which seemed to belong to hair follicles, were often noted within the corium of the lumbar skin region
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• the stratum germinativum of the interfollicular epidermis was slightly thickened in the lumbar skin region
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