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==Introduction==
==Introduction==
The radioimmunoassay (RIA) is a sensitive technique used to detect the presence of antigen in a sample using radiolabelled antibodies. Developed in the 1960's, the RIA proved a powerful tool in antigen detection, although the procedure was soon overtaken by ELISA, which utilises enzymes rather than radioactive labels. RIAs are still used today however, to measure:
The radioimmunoassay (RIA) is a sensitive technique used to detect the presence of antigen in a sample using radiolabelled antibodies. Developed in the 1960's, the RIA proved a powerful tool in antigen detection, although the procedure was soon overtaken by ELISA, which utilises enzymes rather than radioactive labels. RIAs are still used today however, to measure:
{{review}}
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{{Jim Bee 2007}}
[[Category:Immunological Testing]]
[[Category:Immunological Testing]]