Go back into the Histonet Archives and search for  the following: GFP Donna
Montague, she used formic acid decalcification and gave specific
information on what she had done.  

It will depend on your GFP, most are more stable now
Gayle Callis
MT,HT,HTL(ASCP)
Histopathology Supervisor
Veterinary Molecular Biology - Marsh Lab
Montana State University - Bozeman
19th and Lincoln St
Bozeman MT 59717-3610

406 994-6367
406 994-4303 (FAX)