The technique you are after is one for degenerating cell bodies
and axons:

De Olmos JS, Beltramino CA, De Lorenzo SDO (1994) Use of an
amino-cupric-silver technique for the detection of early and
semiacute neuronal degeneration caused by neurotoxicants,
hypoxia, and physical trauma. Neurotoxicology and Teratology 16:
545-561.

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-------------------------
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/