# ELISA
Who / What
**Enzyme-Linked Immunosorbent Assay (ELISA)** is a widely used analytical biochemistry technique designed to detect and quantify the presence of an antigen in a sample using specific antibodies conjugated with enzymes. It belongs to the broader category of enzyme immunoassays (EIA) and serves as a solid-phase assay, enabling precise detection of proteins or other ligands.
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Background & History
Developed by Swedish researchers **Eva Engvall** and **Peter Perlmann** in 1971, ELISA was first introduced as an advanced diagnostic tool. Originally conceived to improve antibody detection methods, it quickly gained traction due to its versatility across medicine, plant pathology, biotechnology, and industrial quality control. The assay’s evolution reflected advancements in immunology and molecular biology, making it a cornerstone of modern analytical chemistry.
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Why Notable
ELISA stands out for its broad applicability—from diagnosing diseases like HIV or autoimmune conditions to monitoring environmental contaminants and agricultural pathogens. Its adaptability allows researchers to customize assays for specific targets, enhancing diagnostic accuracy and efficiency. Over the decades, ELISA has become indispensable in academic research, pharmaceutical development, and regulatory testing.
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In the News
ELISA remains a critical tool in current scientific and medical fields, particularly in response to global health challenges like pandemics (e.g., COVID-19) and emerging infectious diseases. Recent innovations, such as automated ELISA systems and miniaturized assays, continue to refine its performance for faster and more cost-effective diagnostics.
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Key Facts
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