Microporous PU scaffolds

The surface of the microporous PU scaffolds can be modified to control cell fate. Similar approaches as those used for fibrous PU scaffolds can be employed." " For example, to induce endothelial cell migration into scaffolds for accelerated vascularization, heparin was bound to the scaffold surface. An aminolysis step was first used to introduce amine groups on the surface, and then the cross-finking of heparin... 

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