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Appl. Environ. Microbiol., 08 1997, 3268-3273, Vol 63, No. 8
W Schonhuber, B Fuchs, S Juretschko and R Amann
The substrate fluorescein-tyramide was combined with oligonucleotide probes
directly labeled with horseradish peroxidase to improve the sensitivity of
in situ hybridization of whole fixed bacterial cells. Flow cytometry and
quantitative microscopy of cells hybridized by this technique showed 10- to
20-fold signal amplifications relative to fluorescein-monolabeled probes.
The application of the new technique to the detection of natural bacterial
communities resulted in very bright signals; however, the number of
detected cells was significantly lower than that detected with
fluorescently monolabeled, rRNA-targeted oligonucleotide probes.
Copyright © 1997, American Society for Microbiology
Improved sensitivity of whole-cell hybridization by the combination of horseradish peroxidase-labeled oligonucleotides and tyramide signal amplification
Max-Planck-Institut fur Marine Mikrobiologie, Bremen, Germany.
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