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3 June 2011Dynamic staining of bacteria at a single-cell level
Bacterial infectious diseases remain one of the major health hazards nation- and worldwide. The expedience of detection
and identification of bacterial pathogens determines how early the diagnosis is, and hence, what the treatment and the
outcome of the illness would be. As we have previously reported, the dynamics of fluorescence staining provides venues
for the development of expedient assays for detection and identification of bacterial species[1]. We measured the kinetics
of bacterial staining with cyanine and thioflavin dyes and investigated their photophysical properties. We demonstrated
that the pseudo first-order kinetic constants of the fluorescence staining processes have species specificity without
contrition dependence. Combining the dynamics of staining with real-time fluorescence microscopy we characterized the
fluorescence staining process at the single-cell level with improved sensitivity and contrast.
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Vicente Nuñez, Srigokul Upadhyayula, Adam Lin, Kenny Chau, Valentine I. Vullev, "Dynamic staining of bacteria at a single-cell level," Proc. SPIE 8018, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XII, 80180A (3 June 2011); https://doi.org/10.1117/12.884186