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On the cover: Calcein-AM-stained tumoral cells (green) were cocultured for 18 h with autologous endothelial cells (red) in the presence of 18α-glycyrrhetinic acid. Confocal microscopy analysis showed the absence of calcein-AM transfer confirming that cytosolic transfer between tumoral and endothelial cells took place through gap junctions. Benlalam, H., A. Jalil, M. Hasmim, B. Pang, R. Tamouza, M. Mitterrand, Y. Godet, N. Lamerant, C. Robert, M.-F. Avril, J. Neefjes, T. Tursz, F. Mami-Chouaib, C. Kieda, and S. Chouaib. 2009. Gap junction communication between autologous endothelial and tumor cells induce cross-recognition and elimination by specific CTL. J. Immunol. 182: 2654–2664.