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Confocal Microscopy

Céline Hoffmann
Address: 84 Val Fleuri - 1526 Luxembourg
Phone. (+352) 26 970 253
Fax. (+352) 26 970 390
celine.hoffmann@crp-sante.lu

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QUANTIFICATION AND COUNTING

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Quantification:  in order to get more information from the pictures, it is possible to quantify fluorescence using Metamorph (Molecular Devices) or ImageJ.

In this example, the quantity of fluorescence contained in the actin filaments has been measured in two different conditions of cytoplasmic pH.

"Low" pH (pH 6.2) 

"High" pH (pH 7.4)       

quantity of fluorescence present
on filamentous structure

LowPh
HighPh
highAndLowPh

Counting:  it is possible to recognize individual objects (or cells), count, and measure size, volume... with Imaris (Bitplane) or ImageJ.

Raw image

Segmentation

RawImage
Segmentation

Natacha Ralainirina, LIGA

Number of cells

39

Number of labelled cells

31

% of labelled cells

80%

Mean cell area

26 µm2