TFF3 and Atrophy: The staining pattern for each biomarker was as expected (Figure 2), showing a cytoplasmic–membranous distribution, including a very specific mutual exclusion localization for TFF3 and cytokeratin, allowing the individualization of goblet (TFF3+) and epithelial cells (TFF3−/CK+) and the segregation of cases with mild and severe signs of intestinal metaplasia or atrophy, respectively, using the mean fluorescent intensity of each marker.