A 17-year-old girl with diabetes in Mexico has not required insulin or any other drug for more than a year after being given cells from newborn pigs, claims a team at the Children’s Hospital at Mexico. If confirmed, it represents a rare success for animal-to-human “xenotransplantation”.



However, five of 12 teenagers that received the cells have only had their insulin requirements reduced by half, and the other six did not benefit at all.



Other researchers also point out that some young people do sometimes start producing insulin again, and that the Mexican team has yet to prove that the insulin really is coming from the pig cells.
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