title: Electrophoretic properties and purification of large and small plaque-forming strains of polyoma virus.
mesh_terms: D046508:Culture Techniques; D004586:Electrophoresis; D006386:Hemagglutination Tests; D011120:Polyomavirus / Q000302:isolation & purification*; D014357:Trypsin / Q000494:pharmacology; D014776:Virus Cultivation
chemical_list: D014357:Trypsin