 Monoclonal antibodies (IgG1) to F-protein are available from Kerafast (catalog number is EMS015) and to HN protein (Ig2A) antibodies are also available from Kerafast (catalog number is EMS016).Six different variants of mouse monoclonal antibodies to HN protein with different fluorophores are available from ThermoFisher Scientific with catalogs numbers Cat #51-6494-82, Cat #25-6494-82, Cat #12-6494-82, Cat #13-6494-82, Cat #14-6494-82, Cat #53-6494-82.The standard test for Sendai virus detection is the ELISA (enzyme-linked immunosorbent assay), however, MFI (Multiplex Fluorescent Immunoassay) is more sensitive.