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Embryonic Stem-Cell Approvals Rise as Judge Weighs Status

Research using human embryonic stem-cell lines approved under President Barack Obama is accelerating, boosting a scientific field that’s been dogged by legal and political threats.

The U.S. allowed 37 embryonic stem-cell lines for taxpayer-funded research in June, the most of any month this year, according to the National Institutes of Health. The total number of U.S.-endorsed lines now stands at 128, a decade after a curb by former President George W. Bush limited work to about 20 lines derived before Aug. 9, 2001. President Barack Obama repealed the restriction by executive order on March 11, 2009.