title: Concentration of influenza virus using polyethylene glycol.
mesh_terms: D000482:Allantois / Q000382:microbiology; D000818:Animals; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D009980:Influenza A virus / Q000302:isolation & purification*; D008828:Microbiological Techniques; D011092:Polyethylene Glycols
chemical_list: D011092:Polyethylene Glycols