NES and neoplasm: These distinct pericyte subtypes were later functionally characterized and shown to differ in their multipotent properties [8, 9] and angiogenic potential [10]. In vitro and in vivo assays revealed that type-2 (Nestin-GFP+/NG2-DsRed+), but not type-1 (Nestin-GFP−/NG2-DsRed+), pericytes are recruited during tumor angiogenesis.