title: An improved single-radial-immunodiffusion technique for the assay of influenza haemagglutinin antigen: application for potency determinations of inactivated whole virus and subunit vaccines.
mesh_terms: D006389:Hemagglutinins, Viral / Q000032:analysis*; D005779:Immunodiffusion; D007252:Influenza Vaccines; D009975:Orthomyxoviridae / Q000276:immunology*; D014613:Vaccines, Attenuated
chemical_list: D006389:Hemagglutinins, Viral; D007252:Influenza Vaccines; D014613:Vaccines, Attenuated