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This paper has no abstract; this is the first paragraph. The mechanisms of tissue tension phenomena and their physiological significance are controversial (Vincent and Jeronimidis, 1991; [Peters and Tomos, 1996a] and [Peters and Tomos, 1996b]; Kutschera and Niklas, 2007). Specifically, the apparently spontaneous expansion of inner tissues after removal of the peripheral cell layers is a perpetual bone of contention. We had reported evidence suggesting that inner tissue expansion is driven by water uptake (Peters and Tomos, 2000). Kutschera and Niklas (2007) rejected this interpretation and insisted that inner tissue expansion is an elastic response to the release from compressive …