Motic Instruments Inc. Canada
October 06, 2006
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Fluororophore or fluorescent probe:
Fluorochromes when conjugated to other originally active substances, such as a protein,
antibody, or nucleic acid, in order to selectively stain targeted substances within the
specimen
Longpass filters are also useful for observing all the stains on multi-stained specimen
such as FITC and TRITC .
4.3.2 Band
pass
Filters that pass light of a certain restricted range of wavelength.
Bandpass filters are useful for observing a certain stain on multi-stained specimen such
as when two stains FITC and TRITC are used.
Bandpass filter are designed to maximize the brightness of the desired fluorescence
(signal) to brightness of the background (the noise) ratio for applications where
discrimination of signal component is more important than overall image brightness.
Both FITC and TRITC are visible
TRITC
Only FITC is visible
FITC
Narrow Bandpass Filter
Block Block
Pass
Wide Bandpass Filter
Block Block
Pass
FITC