When the eutopic endometrium from women with endometriosis was compared with the endometrium of women without endometriosis, no significant difference was observed in staining intensity, although eutopic endometrial cells of women with endometriosis showed a trend towards decreased immunoreactivity for IkBα (p=0.1) (Figure 1, Table 2). This evidence concerns the gene NFKBIA and endometriosis.