LSM 510
OPERATION IN EXPERT MODE
LSM 510 META
Process Menu
Carl Zeiss
03/06
B 45-0021 e
4-151
4.6.12.4 Ratiometric
Dyes
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Fura-2, Indo-, SNARF, Cameleon, Ratiometric Pericam, Phluorin,...
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Display fluorescence ratio R over time
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Display fluorescence ratio R corrected for background/autofluorescence over time
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Calculate absolute ion concentrations (pixel by pixel) via titration calibration (known ion concentrations
applied to the cells – in situ – or in solutions – in vitro or equation calibration where possible [Fura-2,
Indo-, SNARF]
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Calculation of R eliminates artifacts and uncertainties caused by
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inhomogenous dye distribution
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photobleaching
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may be applied with moving cells
4.6.12.5
Ratiometric Dyes - Online Ratio
R(t1) = F1(t1) / F2(t1), R(t2) = F1(t2) / F2(t2) ...
Fig. 4-139
Ratiometric Dyes – Online ratio