I quite often see faint cytoplasmic staining in immunostains for Helicobacter. You're supposed to ignore it. It's often present in the negative control slide - one of the few reasons I ever look at a negative control slide.
These days I get my IHC for Helicobacter from whatever Genzyme is called this week. I'm noticing considerably less cytoplasmic staining than I've usually seen before. (I have no commercial interest here.) Bob Richmond Samurai Pathologist Maryville TN _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet