西亚试剂：Stem-cell success poses immunity challenge for diabetes

Each year, surgeon Jose Oberholzer frees a few people with type 1 diabetes from daily insulin injections by giving them a transplant of the insulin-secreting β-cells that the disease attacks. But it is a frustrating process. Harvested from a cadaver’s pancreas, the β-cells are in short supply and vary in quality. And the patients must take drugs to suppress their immune response to the foreign cells, which can in turn cause kidney failure.

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