EGF and endometriosis: Yaghoubi et al. [39] found a significantly decreased expression of genes for EGF (epidermal growth factor), MDGF (monocyte/macrophage-derived growth factor) and PDGF (platelet-derived growth factor-B) in the endometriosis group but no effect in the control group when examining the impact of peritoneal fluid mononuclear cells exposure to vit D in women with and without endometriosis (Table 3).