The cryopreservation technique we used did not modify the viscous and elastic properties of fresh arteries. The cryopreserved segments maintained similar viscous and elastic properties when compared with the arteries of normotensive, ambulatory subjects. The viscous and elastic behaviour of ePTFE conduits is very different from those of arteries.
The authors gratefully acknowledge the technical assistance of Mr. Elbio Agote and the Tissue Bank personnel (BNOT).
Statement of funding: This work was performed through a cooperation agreement between Universidad de la República (Uruguay) and Universidad Favaloro (Argentina), and it was partially supported by research grants given to Dr. R.L. Armentano by the Development Program on Basic Sciences (PEDECIBA).
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