title: Californium-252 plasma-desorption mass spectrometry of polymethylenediamine-linked enkephalin peptides.
mesh_terms: D002142:Californium; D003959:Diamines / Q000032:analysis*; D004745:Enkephalins / Q000032:analysis*; D013058:Mass Spectrometry; D008970:Molecular Weight; D011108:Polymers / Q000032:analysis*
chemical_list: D003959:Diamines; D004745:Enkephalins; D011108:Polymers; D002142:Californium