Bebhinn Treanor wrote: 
> Can anyone suggest a counter-stain for in-situ hybridization of monkey
> brain tissue using  Anti-DIG AP Fab Fragments followed by NBT/BCIP detection?

Neutral red 0.5% at pH 4.

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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/