“…The classification of PG's developments consists of (i) cellular phase, (ii) capillary phase or vascular phase, and (iii) involutionary phase [6]. Furthermore, the Immunohistochemistry (IHC), using VEGF marker, presents the endothelial cells positive for vascular markers such as CD31, CD34, ICAM-1, VCAM-1, factor VIII antigen, and WT-1, they were negative for glucose transporter protein isoform-1 (GLUT-1) [6], [7]. Some more specialized techniques are associated with marking components of Renin-Angiotensin System (RAS), such as 3,3 -Diaminobenzidine (DAB) immunohistochemical (IHC) staining, PG-Derived Primary Cell Lines, NanoString mRNA analysis, RT-qPCR and Western blotting (WB) performed on total protein extracts [18].…”