Fig. 1

Histological classification of biopsies from the mucosa of the upper gastrointestinal tract showing the expression of iNOS, NF-κ B and MPO, as assessed by means of immunohistochemical staining using specific antibodies
Histological classification of biopsies from the mucosa of the upper gastrointestinal tract showing the expression of iNOS, NF-κ B and MPO, as assessed by means of immunohistochemical staining using specific antibodies