Figure 4. Alterations in the ECS elements in endometrial and placental diseases. Main findings regarding alterations in members of the ECS in endometriosis, miscarriage, ectopic pregnancy, pre-eclampsia and endometrial cancer. This image contains some elements adapted from the Servier Medical Art Image Bank (Servier Laboratories (Aust) Pty Ltd) licensed under a Creative Commons Attribution 3.0 Unported Licence.