Article

Fluorescence immunoassay

Human Pathlogy (Impact Factor: 2.77). 03/1984; 15(2):112-6. DOI: 10.1016/S0046-8177(84)80049-0
Source: PubMed

ABSTRACT

Fluorescence immunoassay is a sensitive technique that can be used in the measurement of many compounds, including drugs, hormones, and proteins; in the identification of antibodies; and in the quantification of antigens such as viral particles and, potentially, bacteria. Homogeneous fluorescence immunoassay, fluorescent excitation transfer immunoassay, fluorescence polarization immunoassay, solid-phase "dipstick" immunoassay, solid-phase microbead fluorescence immunoassay, substrate-labeled fluorescence immunoassay, and fluorescence immunoassays using internal reflectance spectroscopy or phycobiliprotein conjugates are reviewed.

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    ABSTRACT: A review is given on the novel non-radioactive digoxigenin:anti-digoxigenin (DIG) bioanalytical indicator system. After a general introduction on direct and indirect indicator systems based on previous non-radioactive indicator reactions as well as in vitro and in vivo amplification procedures the principle of the new digoxigenin:anti-digoxigenin technology is demonstrated. The novel system is based on the specific high-affinity interaction between the cardenolide digoxigenin from Digitalis plants and a digoxigenin-specific antibody coupled with a reporter group. A variety of methods for digoxigenin modification of nucleic acids, proteins and glycans are presented. In addition, various applications of the novel non-radioactive indicator system in a variety of direct or indirect detection approaches with either insoluble or soluble substrates are described. It is also shown that with these applications alternative reaction formats are used which are partly characterized by additional amplification steps.
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