Different methods of human, porcine and rat pancreata digestion Langerhans islets purification, immuno-isolation and cryopreservation were compared. The results obtained were assessed in vitro and in vivo. The longest concordial xenograft survival was observed after transplantation of rats islets immunoisolated by Sun's method to streptozotocin diabetic mice. Due to its simplicity and lesser time consumption using Kriomedpol machine was recommended.
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