Assessment of uNK, plasma cells, CD68+ macrophages, CXC-motif ligand 1 (CXCL1), CXC-motif receptor 2 (CXCR2), syndecan-1 and Vascular Endothelial Growth Factor A (VEGF-A) with immunohistochemistry has been used to map the endometrial immune environment in infertility patients with endometriosis. The gene discussed is VEGFA; the disease is endometriosis.