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Acknowledgments
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Reprinted from Cell, 155(3), Venkiteswaran, G., Lewellis, S.W., Wang, J., Reynolds, E., Nicholson, C., and Knaut, H., Generation and Dynamics of an Endogenous, Self-Generated Signaling Gradient across a Migrating Tissue, 674-687, Copyright (2013) with permission from Elsevier. Full text @ Cell