A Collection of cDNA Clones with Specific Expression Patterns in Mouse Brain

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Abstract
A total of 950 cDNA clones were randomly selected from mouse cerebellar cDNA libraries, and of these, about 130 clones were found to correspond to mRNAs which were expressed unequally between the cerebellum and other parts of mouse brain. Their distribution patterns in adult mouse brain were analysed by in situ hybridization, and eight clones were found restricted to specific regions of the brain, including four clones specific to cerebellar granule cells and one clone specific to Purkinje cells. Another 27 clones were preferentially expressed in a diverse, but distinctive subpopulation of brain cells. Among them seven clones were especially abundant in specific nuclei, and three in specific fibre bundles. These clones will be useful in defining new subpopulations of brain cells characterized by different gene expression.