title: Molecular weight characterization of pre- and postimplant artificial heart polyurethane materials.
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002417:Cattle; D006354:Heart, Artificial; D008970:Molecular Weight; D011140:Polyurethanes / Q000378:metabolism*
chemical_list: D001672:Biocompatible Materials; D011140:Polyurethanes