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lüll Nuclear migration during retinal development Baye LM; Link BABrain Res 2008[Feb]; 1192 (ä): 29-36In this review we focus on the mechanisms, regulation, and cellular consequences of nuclear migration in the developing retina. In the nervous system, nuclear migration is prominent during both proliferative and post-mitotic phases of development. Interkinetic nuclear migration is the process where the nucleus oscillates from the apical to basal surfaces in proliferative neuroepithelia. Proliferative nuclear movement occurs in step with the cell cycle, with M-phase being confined to the apical surface and G1-, S-, and G2-phases occurring at more basal locations. Later, following cell cycle exit, some neuron precursors migrate by nuclear translocation. In this mode of cellular migration, nuclear movement is the driving force for motility. Following discussion of the key components and important regulators for each of these processes, we present an emerging model where interkinetic nuclear migration functions to distinguish cell fates among retinal neuroepithelia.|Animals[MESH]|Cell Cycle/physiology[MESH]|Cell Lineage/physiology[MESH]|Cell Movement/*physiology[MESH]|Cell Nucleus/*physiology/ultrastructure[MESH]|Humans[MESH]|Models, Biological[MESH]|Neuroepithelial Cells/cytology/*physiology[MESH]|Neurons/cytology/*physiology[MESH]|Retina/cytology/*embryology/growth & development[MESH]|Stem Cells/cytology/*physiology[MESH] |