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Nature Cell Biology 6, 913–915 (1 October 2004) | doi:10.1038/ncb1004-913

GSK-3|[beta]| sets Snail's pace

Karni Schlessinger & Alan Hall

Epithelial cells, which typically are polarized, spatially organized and tightly packed, can undergo dynamic changes in morphology and motility termed epithelial-mesenchymal transitions (EMTs). Although EMT is a key process in development and wound healing, it has also been implicated in neoplastic transformation, particularly invasion and metastasis.