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PERSPECTIVE
Neurogenetics Laboratory, Department of Neurosciences, University of California at San Diego, La Jolla, California 92093, USA
| The first 100 words of the full text of this article appear below. |
In 1951, Douglas Scott Falconer first described the reeler spontaneous mutant mouse (Falconer 1951
). In those mice, cortical neurons are generated normally but migrate abnormally, resulting in an inversion of the cortical laminar organization, with later-born neurons remaining in the deeper layers of the cortex. Forty-four years later, DArcangelo et al. (1995)
identified the causative gene Rln and the encoded protein Reelin. Reelin pathway mutants, and particularly mice with mutations of its intracellular effector Dab1 (Disabled-1), probably represent the most-studied phenotype of altered neuronal migration. The observations that mutations of Dab1 phenocopy the Rln mutation, and that Dab1 is
| The known side of Reelin/Dab1 signaling |
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| Down-regulating Dab1 |
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| Overmigration: when Dab1 down-regulation fails to occur |
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