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Researchers at IBEC have discovered that epithelial tissues adapt to prolonged stretching by slowly reorganising their keratin cytoskeleton into large multicellular networks. Using advanced live imaging, engineered tissue models and computational simulations, the team found that this process eventually pushes the cell nucleus out of its surrounding keratin cage. The findings reveal a previously unknown mechanism by which tissues respond to sustained mechanical stress, with potential implications for development, organ physiology and diseases linked to defective keratin organisation.