Enzyme linked immunosorbent assay (ELISA) is a widely used experimental technique in the fields of biochemistry and immunology, mainly used to detect and measure the presence and concentration of specific proteins in samples. The application range of enzyme-linked immunosorbent assay (ELISA) is very wide, and it can be used for various detection purposes. Some of the main applications include:

Protein concentration measurement: Enzymes can be used to measure the concentration of specific proteins in samples, which is crucial for biological research and medical diagnosis.

Cytokine detection: used to measure the levels of cytokines, growth factors, etc. in biological samples, which helps to understand the immune process.

Food testing: used to detect specific proteins, toxins, or pollutants in food.

Virus detection: used to detect viruses or virus antibodies in body fluids.

Genetic research: Used to detect DNA, RNA, or protein interactions, it is very useful for genetic research and gene expression analysis.

Immunoassay: ELISA can be used to detect and quantify antibodies or antigens in body fluids. For example, used for detecting infectious diseases, autoimmune diseases, etc.

Overall, enzyme-linked immunosorbent assay (ELISA) is a sensitive and high-throughput experimental technique suitable for research and application in various biological and medical fields. Different types of ELISA techniques (such as indirect ELISA, direct ELISA, competitive ELISA, etc.) can be selected based on specific experimental purposes.