title: Density gradient centrifugation of bacteria and nonspecific bacteriophage in silica sol.
mesh_terms: D001435:Bacteriophages; D003470:Culture Media; D004926:Escherichia coli; D066298:In Vitro Techniques; D012822:Silicon Dioxide; D014461:Ultracentrifugation
chemical_list: D003470:Culture Media; D012822:Silicon Dioxide