title: Biological activity in ribonucleoprotein fractions of influenza virus.
mesh_terms: D000818:Animals; D002478:Cells, Cultured / Q000187:drug effects; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D046508:Culture Techniques; D005347:Fibroblasts; D005827:Genetics, Microbial; D005990:Glycerol; D009154:Mutation; D009698:Nucleoproteins / Q000032:analysis* / Q000494:pharmacology; D009975:Orthomyxoviridae / Q000032:analysis* / Q000254:growth & development / Q000302:isolation & purification; D010447:Peptide Hydrolases; D012367:RNA, Viral / Q000302:isolation & purification / Q000494:pharmacology; D011995:Recombination, Genetic; D012260:Ribonucleases; D013395:Sucrose; D013501:Surface-Active Agents; D013696:Temperature; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D009698:Nucleoproteins; D012367:RNA, Viral; D013501:Surface-Active Agents; D014764:Viral Proteins; D013395:Sucrose; D012260:Ribonucleases; D010447:Peptide Hydrolases; D005990:Glycerol