title: Structure of simian virus 40. I. Purification and physical characterization of the virus particle.
mesh_terms: D002021:Buffers; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003168:Complement Fixation Tests; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D008854:Microscopy, Electron; D008970:Molecular Weight; D013539:Simian virus 40; D014776:Virus Cultivation
chemical_list: D002021:Buffers