title: [Methodical principles for improving influenza vaccines].
mesh_terms: D000818:Animals; D002642:Chick Embryo; D012321:DNA-Directed RNA Polymerases; D003673:Defective Viruses; D005838:Genotype; D006801:Humans; D007252:Influenza Vaccines / Q000592:standards; D007251:Influenza, Human / Q000517:prevention & control; D012367:RNA, Viral / Q000096:biosynthesis; D012107:Research Design; D014611:Vaccination; D014776:Virus Cultivation; D014779:Virus Replication
chemical_list: D007252:Influenza Vaccines; D012367:RNA, Viral; D012321:DNA-Directed RNA Polymerases
vernacular_title: K voprosu o metodicheskikh printsipakh sovershenstvovaniia grippoznykh vaktsin