| http://www.w3.org/ns/prov#value | - In particular, in aspect, provided herein is a method of preparing a polyurethane-based hydrogel biochip having a biomolecule immobilized thereon, the method comprising providing an organic solvent solution of a polyurethane-based hydrogel prepolymer; providing a solution of the biomolecule to be immobilized thereon; covalently binding the biomolecule to the polyurethane-based hydrogel prepolymer;
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