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On the cover: Immunostaining of occludin (red) on brain capillary endothelial cells (BCEC) cocultured with GFP-dendritic cells (DC) (green). An MIP-1α-induced deep invasion of GFP-DC into BCEC monolayer can be prevented by MMP inhibitor resulting in improved occludin distribution and suggesting an importance of MMPs during DC traffic in the CNS. Zozulya, A. L., E. Reinke, D. C. Baiu, J. Karman, M. Sandor, and Z. Fabry. 2007. Dendritic cell transmigration through brain microvessel endothelium is regulated by MIP-1α chemokine and matrix metalloproteinases. J. Immunol. 178: 520–529.