The doctor takes from the child blood.

Researchers writing in the October 9 edition of the journal Cell report they have for the first time successfully converted human embryonic stem cells into insulin-producing beta cells equivalent in nearly every way to regular, normally-functioning beta cells . The discovery, which was the work of a team led by Douglas Melton of the Harvard University Department of Stem Cell and Regenerative Biology and the Howard Hughes Medical Institute, is being hailed as a breakthrough in the search for an effective way to treat type 1 diabetes - a disease which affects an estimated three million Americans each year.

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