PDPN and neoplasm: We distinguish endothelial subtypes using a panel of endothelial (AQP1, CD34, PDPN, LYVE-1, MECA-79) and pericyte markers (αSMA), and categorize tumor-associated vessels into arterioles, activated capillaries/postcapillary venules, immature neovasculature, high-endothelial venule-like vessels, lymphatic capillaries, and inflamed lymphatic capillaries.