Lamin b1 staining seemed to have an increased labeling distribution in the non-endometriosis endometrium (Fig. 7a), eutopic endometrium (Fig. 7b), and deep infiltrative endometriosis (Fig. 7c) groups, not only in the non-epithelial compartment but also when co-localized with E-cadherin, indicating the presence of significant glandular components in these samples. This evidence concerns the gene CDH1 and endometriosis.