[Histonet] does fixation kill native EGFP or RFP fluorescence?

[Caroline Bass]

Hello,

My boss insists that EGFP or RFP expressing tissue will lose the  
native fluorescence if fixed.  Is this true?  I know it isn't true  
for tissue culture, but he is very insistent that it will occur.

I have cut the liver into blocks and immersion fixed them in 10%NBF  
overnight at 4 degrees celcius..  If I cut a thin section of fresh  
tissue I can see a lot of signal.  He insists I am wasting my time by  
sectioning the blocks.

Any advice would be appreciated.

Thanks,

Caroline