title: Purification and concentration of parainfluenza virus.
mesh_terms: D000327:Adsorption; D001466:Barium Sulfate; D011232:Chemical Precipitation; D003168:Complement Fixation Tests; D006386:Hemagglutination Tests; D008722:Methods; D000644:Quaternary Ammonium Compounds; D018108:Respirovirus / Q000302:isolation & purification*; D015032:Zinc
chemical_list: D000644:Quaternary Ammonium Compounds; D001466:Barium Sulfate; D015032:Zinc