Wide L (2005). The hemagglutination inhibition assay (HAI) is widely used to evaluate vaccine-induced antibody responses as well as to antigenically characterize influenza viruses. Therefore hemagglutination is inhibited when antibodies are present. The HI assay takes advantage of some viruses' ability to hemagglutinate (bind) red blood cells, therefore forming a "lattice" and preventing the red blood cells from clumping. The two most common methods for measuring this are the hemagglutination inhibition assay (HI) and the viral neutralization assay (NT), which have not been systematically compared for a large number of influenza viruses. Surface-assisted hemagglutination and hemagglutination inhibition assays Hemagglutination inhibition | definition of ... - Medical Dictionary The first assay determines optimal viral antigen concentrations by hemagglutination. Hemagglutination Inhibition Assay The HAI assay was performed in 96-well V-bottom microti-ter plates (Nunc #249570) in two independent assay runs. This paper presents comparative hemagglutination inhibition (HI) assay data obtained using ferret or rat antisera to analyze influenza viruses. For influenza virus, HI assay is used to identify the hemagglutinin (HA) subtype of an unknown isolate or the HA subtype specificity of antibodies to influenza virus. Anti-Infective & Vaccine Challenge Studies | Charles River An Optimized Hemagglutination Inhibition (HI) Assay to Quantify ... The hemagglutination inhibition (HI) assay is used to titrate the antibody response to a viral infection. Hemagglutination inhibition and NT assays have been utilized for years to investigate influenza immunity, although only a few studies have directly compared the assays' influenza antibody detection capabilities, and most of these studies evaluated vaccine-derived immunity. The HA inhibition assay - YouTube Haemagglutination inhibition test (HI) - YouTube Hemagglutination Inhibition - an overview | ScienceDirect Topics Hemagglutination Inhibition Assay | SpringerLink Surface-assisted hemagglutination and hemagglutination inhibition assays Hemagglutination Inhibition (HAI) Assay - NCI Visuals Online The inhibition is specific and is widely used for virus identification and for antibody determination. The basis of the HI assay is that antibodies to influenza virus will prevent attachment of the virus to red blood cells. Therefore hemagglutination is inhibited when antibodies are present. Development of a Hemagglutination Inhibition Assay for Duck Tembusu Virus
