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Updated: Jul 30, 2026

Single-cell Analysis of Bacillus subtilis Biofilms Using Fluorescence Microscopy and Flow Cytometry
Published on: February 15, 2012
Simultaneous determination of gene expression and bacterial identity in single cells in defined mixtures of pure
L K Poulsen1, H M Dalton, M L Angles
1Department of Microbiology, Technical University of Denmark, Lyngby, Denmark.
Abstract:
A protocol was developed to achieve the simultaneous determination of gene expression and bacterial identity at the level of single cells; a chromogenic beta-galactosidase activity assay was combined with in situ hybridization of fluorescently labelled oligonucleotide probes to rRNA. The method allows monitoring of gene expression and quantification of beta-galactosidase activity in single cells.
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