Figure 2.

ERV3 Env protein expression in organs known to be highly hormonally dependent. In the placenta, the highest expression is seen in the cyto/syncytotrophoblastic cells, with only a weak staining in the stroma. In the testis, there is significant staining of immature cells at different intensity. In the Fallopian tube, there is dense staining of the tips of the cells, which is particularly marked with the antibody HPA017209. The large luteinised cells in ovarian corpus luteum, and all of the cells in the adrenal cortex are shown to be moderately to strongly positive.