> Amyl acetate can be used in place of alcohol ether as the solvent. Once infiltration is complete the solvent can be gradually removed I believe by using alcohol:chloroform mixture.

It's also OK to use methanol to dehydrate the tissue and to
dissolve
the nitrocellulose. Ethanol won't do though: it makes
nitrocellulose
swell but doesn't dissolve it.

-------------------------
John A. Kiernan
Department of Anatomy and Cell Biology
The University of Western Ontario
London,   Canada   N6A 5C1
   kiernan@uwo.ca
   http://publish.uwo.ca/~jkiernan/