Hi Histonetters,

I know that htis issue has been discussed before. And I apologized to 
bring it up again. But is anybody out there to give us some control 
tissue for copper staining. So far my affords to get some positive fetal 
liver or something similar were not successfull. I am willing to trade 
some other tissue blocks for it. In case, nobody has something to share, 
is there a commercial source for such control tissue?

thanks for your help,

Dr. Heike Grabsch, Germany