title: An enzyme-linked immunosorbent assay (ELISA) for influenza haemagglutinin.
mesh_terms: D004797:Enzyme-Linked Immunosorbent Assay; D006389:Hemagglutinins, Viral / Q000032:analysis*; D007124:Immunoenzyme Techniques; D009980:Influenza A virus / Q000032:analysis*; D009975:Orthomyxoviridae / Q000032:analysis*
chemical_list: D006389:Hemagglutinins, Viral