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Cell. 1987 Jul 3;50(1):79-88.

Expression of the proto-oncogene int-1 is restricted to specific neural cells in the developing mouse embryo.


We have used in situ hybridization and computer-aided reconstruction to study the spatial distribution of expression of the mammary tumor proto-oncogene int-1 during mouse embryogenesis. int-1 RNA accumulation is restricted to specific regions of the neural plate and its derivatives between 9 and 14.5 days of development. int-1 RNA accumulates throughout the neural plate at the anterior head folds of the 9 day embryo but only at its lateral tips in more posterior regions. Following neural tube closure, int-1 expression is restricted to specific regions of the dorsal wall of the brain ventricles and spinal cord, the ventral wall of the midbrain and the diencephalon, and the lateral walls of the neuroepithelium at the midbrain-hindbrain junction. These data suggest that int-1 has a role in the early stages of central nervous system development in the mouse embryo.

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