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Development of immunoradiometric assays for human thyroglobulin using monoclonal antibodies and the biotin/avidin

H Pfahl1, B Heilig, H Bethäuser

  • 1Medizinische Klinik, Universität Heidelberg, Mannheim.

Journal of Clinical Chemistry and Clinical Biochemistry. Zeitschrift Fur Klinische Chemie Und Klinische Biochemie
|July 1, 1988
PubMed

Monoclonal antibodies against human thyroglobulin were produced by the hybridoma technique. Using three non-crossreactive monoclonal antibodies, an IRMA system was developed, with a polyclonal rabbit antibody fixed on microtiter plates as first extracting antibody. The monoclonal antibodies were used as second antibody, while anti-mouse IgG-biotin from goat and [125I]streptavidin served as the indicator system. The source of the monoclonal antibodies was diluted culture medium without purification. Sensitivities of 3-4 micrograms/l were obtained with all 3 monoclonal antibodies; interassay variation was about 5%. This test system will be used for further immunological characterization of circulating thyroglobulin in different thyroid diseases.

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Hybridoma Technology01:31

Hybridoma Technology

Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation, polyethylene glycol...