Polymerase Chain Reaction for the Detection of Helicobacter pylori in Formaldehyde-Sublimate Fixed, Paraffin-embedded Gastric Biopsies

To improve morphologic detail and immunohistochemical staining, mercuric chloride-containing fixatives such as formaldehyde-sublimate (FS) have been widely used as an alternative for neutral buffered formalin. FS-fixed, paraffin-embedded tissue, however, is considered to be an unreliable source of D