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Reversible cell attachment and detachment for tissue engineering and cell separation. (a) Corneal reconstruction with tissue-engineered epithelial sheets cultured on the PNIPAAm surface. Pictures of corneal surface before surgery and covered by the tissue engineered cell sheet 14 months after surgery (from ref. 145 with permission). (b) CS-programmed aptamer-functionalized surface for reversible cell attachment and detachment (from refs. 161 and 123 with permission).
