Coulter Immuno Lyse

pamela mccloskey pmcclosk at
Wed Nov 27 05:18:13 EST 1996

Our laboratory is using FITC labeled bacteria to study phagocytosis in 
neutrophils. Fluorescence of both the extracellular and adherent 
bacteria is quenched with ethidium bromide. In the future, we would like 
to simultaneously measure oxidative burst in neutrophils using DCFH-DA 
and HE.

Recently, we came across a reference where Coulter's Immuno lyse was 
used to quench extracellular FITC labeled bacteria with great success.  
We tried this method and were unsuccessful in our attempts to quench 
extracellular bacteria.  

Has anyone tried to use this method for quenching? And it so, were you 
successful?  Any suggestions would be appreciated.

Thank you.

Pamela McCloskey
Research Scientist II
Department of Pediatrics
Nassau County Medical Center

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