Developmental expression offlt3 mRNA in the mouse brain

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Abstract
The expression and localization offlt3 mRNA were investigated using Northern blotting andin situ hybridization during the developmental process of the mouse brain. By Northern blotting, the expression of theflt3 gene was not detected in embryonic, neonatal, or early postnatal brains, but was markedly increased with age. In adult mice,flt3 was abundantly expressed in the cerebellum, moderately in the pons, and faintly in the thalamus and the cerebral cortex. Byin situ hybridization, some neurons that expressedflt3 formed synaptic connections with each other. The present findings suggest that theflt3 gene expression is related to the cell type and the developmental process.