We have a researcher here that is having some difficulties.  We have frozen brain and liver tissues from some patients in Poland. These tissues are autofluoresceing.  We have tried mouse brains that were fresh frozen here at the lab.  They did not autofluoresce.  If anyone has any idea what may be going on we would be grateful. 
 
Thanks in advance,
Leslie Dixon 
Research Histology 
SC Johnson Research Building 
2-6867