title: Structure of simian virus 40. II. Symmetry and components of the virus particle.
mesh_terms: D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004279:DNA, Viral / Q000032:analysis*; D004586:Electrophoresis; D008854:Microscopy, Electron; D008962:Models, Theoretical; D008970:Molecular Weight; D013539:Simian virus 40; D014357:Trypsin / Q000494:pharmacology; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D004279:DNA, Viral; D014764:Viral Proteins; D014357:Trypsin