IFN-γ 1 (pig) ELISA Kit

Also known as type II interferons, IFN-γ is a glycoprotein of 146 amino acids. IFN-γ is a cytokine critical for the innate and adaptive immunity. It is produced predominantly by natural killer (NK) and natural killer T (NKT) cells as part of the innate immune response and by T helper cells and cytotoxic T lymphocyte (CTL) as part of the adaptive immunity. IFN-γ has antiviral, immunoregulatory, and anti-tumor properties. IFN-γ promotes the NK cell activity, increases the antigen presentation by action on the lysosome activity of macrophages, promotes Th1 differentiation, and suppresses Th2 differentiation which would cause a humoral (antibody) response, modulates the production of IgG2a and IgG3 from activated plasma B cells, increases expression of class I MHC molecules as well as class II MHC on antigen-presenting cells, promotes adhesion and binding required for leukocyte migration. IFN-γ interacts with other cytokines, either in a synergistic (e.g., TNF) or antagonistic (e.g., IL-4) fashion. Enzyme ImmunoAssay (EIA) is a technique to detect and quantify antigens (proteins, hormones�) or antibodies in samples. It relies on the ability of an antibody to bind a specific antigen. Either the antibody or the antigen is labelled with an enzyme whose substrate is a chromogen or a fluorogen converted in a measurable product (color or fluorescence). Enzyme-linked Immunosorbent Assay (ELISA) is a type of EIA using a solid phase (ex: microtiter plate) coated with an antigen immobilizing the molecule to detect. Over the time, scientists have extended the term ELISA to EIAs using an antibody coating the solid phase. That explains why our EIA kits using coated antibodies are also called ELISA kits.