Hi Wondering where other laboratories performing the SV40 anitbody for IHC are obtaining control tissue from, is it purchased from a company if so which one? We are currently performing the SV 40 IHC on Ventana Ultra/ XT and we are not getting the appropriate staining, any help would be greatly appreciated. Thanks Helene Assistant Supervisor of Histology Upstate Medical University _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet