[Histonet] Formaldehyde: tissue degradation

[Pankaj Krish Soni]

Dear All
 
We are trying to identify some research that studies the degradation of
tissue kept in formaldehyde over long periods of time (over 5 years).
Ultimately we are trying to assess the number of years beyond which the
quality of tissue fixed in formaldehyde would not generally permit valid
scientific evaluation.
 
Does anyone know of any relevant research?
 
Any help would be very much appreciated.  Thank you.
 
Krish Soni