Specifically, by comparing the previously published microarray data from eutopic endometrium from baboons after induction of endometriosis with the pre-inoculation endometrium of the same animals, we demonstrated increased expression of SOX9 and many of the FUT genes (including FUT3, FUT5, FUT8 and FUT11 that could be responsible for SSEA1 epitope expression) in baboons. Here, FUT4 is linked to endometriosis.