Immunofluorescence staining for endogenous septin 2 (green), cell-cell adhesion proteins (red) and actin filaments in HDMVECS and scoring of the organization of junctional molecules (A-D). Insets indicate enlarged area of the image. (A) Endogenous septin 2, nectin-2, actin filaments, and blind scores of nectin-2 organization are shown in untreated (Upper) and TNF-α-treated HDMVECs (Lower). (B) Endogenous septin 2, afadin, actin filaments, and blind scores of afadin organization are shown in untreated (Upper) and TNF-α-treated HDMVECs (Lower). (C) Endogenous septin 2, PECAM-1, actin filaments, and blind scores of PECAM-1 organization are shown in untreated (Upper) and TNF-α-treated HDMVECs (Lower). (D) Endogenous septin 2, ZO-1, actin filaments, and blind scores of ZO-1 organization are shown in untreated (Upper) and TNF-α-treated HDMVECs (Lower). Scale bars: 50 μm. Variances among observers are statistically not significant. Differences in the organization of junctional proteins between untreated and TNF-α-treated HDMVECs are statistically significant. p-values are < 0.0001.