Warthin Starry should do good, you may try different mordant besides 2%
AgNo3,  like 3% FeCl3 in water or any other solution of a heavey metal.

Richard Cartun wrote:

> Is there anyone in Histoland that does a good "Warthin-Starry"
> histochemical stain for Cat Scratch disease?  I have a very interesting
> case that shows robust immunoreactivity for Bartonella henselae, but I
> want to see what the organisms look like with a good histochemical
> stain.  Would you recommend another histochemical stain in place of the
> Warthin-Starry?  Thanks!
>
> Richard Cartun