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AbstractIntracellular Ca2+ signals in response to inositol 1,4,5-trisphosphate-producing agents often present themselves as Ca2+ oscillations and propagating Ca2+ waves originating at discrete initiation sites. We studied the spatial organization of the Ca2+ signal in single CPAE endothelial cells stimulated with adenosine triphosphate. The long, thin processes presented a higher agonist sensitivity...