Does anyone have experience with long term storage of Thin Prep and cytospin FNA slides?  The period of storage time will be from one week to a number of years.  They would like to be able to do immunostains on the slides after they are taken out of storage. The slides are in 95% alcohol as they come off the machines. What would you do from there?

Thanks in advance,
Julie Collins
Dir, Immunohistochemistry
Univ. of Kansas Med. Center
Kansas City, KS