The line most widely used human embryonic stem cells can again be studied with federal dollars. Yesterday, the National Institutes of Health (NIH) has approved four stem cell lines submitted by WiCell, the nonprofit associated with the University of Wisconsin, Madison. The lines include H9, which has been used in more than 500 published studies.
These four lines have been approved under the policy on stem cells in the Bush era, but they had to undergo further monitoring to ensure they meet the rigid rules of ethics issued the last summer the Obama administration. WiCell did not submit requests for lines until two weeks ago. Meanwhile, researchers using H9 worried they might have to cancel research projects. (Researchers had already grants may continue to use the lines of the Bush era, but new grants based on them were waiting.)
The hold-up is because the four lines obtained from embryos that were given to Israel. Collection of documents there and Hebrew translation into English took time, WiCell said in a press release. NIH also added nine lines to the register yesterday by The Washington Post , bringing the total to 64.
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