title: Concentration and partial purification of the Hong Kong influenza virus by insoluble polyelectrolyte PE 60.
mesh_terms: D000327:Adsorption; D000645:Ammonium Sulfate; D006723:Hong Kong; D006863:Hydrogen-Ion Concentration; D008298:Maleates; D008722:Methods; D009975:Orthomyxoviridae / Q000302:isolation & purification*; D011108:Polymers
chemical_list: D008298:Maleates; D011108:Polymers; C002189:polyelectrolyte 60; D000645:Ammonium Sulfate